🔬 NMC Official Syllabus · NEET 2027 Preparation
Biology Unit-wise Important Topics Guide
Every topic from the official NMC syllabus — with exam-focused tips, tricks, and memory hacks to score 340+/360 in NEET 2027.
✅ Based on Official NMC/NTA NEET UG Syllabus (Public Notice dated 08.01.2026)
90Biology Questions
360Marks from Biology
10Official Units
50%Total NEET Weightage
~25%
Genetics & Evolution (Unit 7)
~18%
Human Physiology (Unit 5)
~14%
Ecology (Unit 10)
~12%
Plant Physiology (Unit 4)
~12%
Cell Structure (Unit 3)
~19%
Remaining 5 Units
01
Diversity in Living World
Biodiversity, taxonomy, classification, kingdoms, plant & animal diversity
Medium
Taxonomy & Classification
📄 Syllabus
What is living? Biodiversity; Need for classification; Taxonomy & Systematics; Concept of species and taxonomical hierarchy; Binomial nomenclature
- Taxonomic hierarchy: Kingdom → Phylum → Class → Order → Family → Genus → Species
- Binomial nomenclature — Linnaeus; Genus (capital) + species (lowercase), always italicised
- Taxonomic aids: Herbarium, botanical gardens, museums, zoological parks, identification keys
💡 Tips & Tricks
- Mnemonic: King Philip Came Over For Good Soup = Kingdom, Phylum, Class, Order, Family, Genus, Species
- Species = smallest unit; Kingdom = highest unit of classification
- Type specimen is always preserved in a herbarium sheet
Very High
Five Kingdom Classification
📄 Syllabus
Five kingdom classification; salient features of Monera, Protista and Fungi; Lichens; Viruses and Viroids
- Monera: Prokaryotic, includes Bacteria & Cyanobacteria, Mycoplasma (smallest cell, no cell wall)
- Protista: Unicellular eukaryotes — Chrysophytes, Dinoflagellates, Euglenoids, Slime moulds, Protozoans
- Fungi: Chitin cell wall, heterotrophic — Phycomycetes, Ascomycetes, Basidiomycetes, Deuteromycetes
- Viruses: Acellular (not in any kingdom); Viroids = naked infectious RNA; Prions = infectious proteins
- Lichens = Algae + Fungi (mutualism) — Pioneer species in succession
💡 Tips & Tricks
- Cell wall: Fungi = Chitin; Plants = Cellulose; Bacteria = Peptidoglycan (Murein)
- Agaricus, Puccinia = Basidiomycetes; Penicillium, Aspergillus = Ascomycetes
- Viroids cause diseases in plants; Prions cause diseases in animals (BSE, scrapie)
🧠 NEET Trap: Mycoplasma = Monera (prokaryote, no cell wall). Viruses are NOT alive independently. Euglenoids have BOTH plant-like (chloroplast) and animal-like (flexible pellicle) characters.
High
Plant Kingdom Classification
📄 Syllabus
Salient features and classification — Algae, Bryophytes, Pteridophytes, Gymnosperms (3–5 features & at least 2 examples each)
- Algae: Aquatic, no differentiation, chlorophyll present (Spirogyra, Volvox, Ulva, Chara)
- Bryophytes: Amphibians of plant world, no vascular tissue (Funaria, Marchantia, Anthoceros)
- Pteridophytes: First vascular plants, no seeds (Fern, Selaginella, Equisetum)
- Gymnosperms: Naked seeds, no fruit (Pinus, Cycas, Ginkgo = living fossil)
- Angiosperms: Seeds inside fruit — most evolved; Monocots vs Dicots
💡 Tips & Tricks
- Evolution: Algae → Bryophytes → Pteridophytes → Gymnosperms → Angiosperms
- Bryophytes: Dominant phase = Gametophyte; Pteridophytes: Dominant = Sporophyte
- Heterospory (two types of spores) first seen in Selaginella — evolutionary significance
Very High
Animal Kingdom — Key Phyla
📄 Syllabus
Salient features & classification of animals — nonchordate up to phyla level; chordate up to classes level (3–5 features, at least 2 examples)
- Porifera: Canal system, choanocytes, spongocoel (Sycon, Spongilla, Euspongia)
- Cnidaria: Nematocysts, radial symmetry (Hydra, Aurelia, Physalia, Meandrina)
- Platyhelminthes: Acoelomate, flame cells, flat worms (Taenia, Fasciola, Planaria)
- Nematoda: Pseudocoelomate, roundworms (Ascaris, Wuchereria, Ancylostoma)
- Annelida: Metameric segmentation, nephridia (Earthworm, Nereis, Hirudinaria)
- Arthropoda: Largest phylum, jointed appendages, exoskeleton (Cockroach, Apis, Limulus)
- Chordata: Notochord, dorsal hollow nerve cord, pharyngeal gill slits, post-anal tail
💡 Tips & Tricks
- Nematocysts = ONLY in Cnidaria — classic NEET MCQ trap!
- Arthropoda = largest phylum in animal kingdom; exoskeleton = chitin
- Mammals: 3 middle ear ossicles (malleus, incus, stapes) + 4-chambered heart + mammary glands
- Limulus (horseshoe crab) = living fossil of Arthropoda
🧠 Mnemonic: Please Come Play Near Arthropods Mostly Every Calm Hour = Porifera, Cnidaria, Platyhelminthes, Nematoda, Arthropoda, Mollusca, Echinodermata, Chordata, Hemichordata
02
Structural Organisation in Animals & Plants
Plant morphology, anatomy, tissues, frog anatomy
Medium
Morphology of Flowering Plants
📄 Syllabus
Morphology and modifications; Root, stem, leaf, inflorescence, flower, fruit and seed; Families: Malvaceae, Cruciferae, Leguminosae, Compositae, Graminae
- Root modifications: Taproot (storage — carrot), Adventitious (prop roots — Banyan, stilt — maize)
- Stem modifications: Rhizome (ginger), Corm (colocasia), Bulb (onion), Tendril (cucumber), Phyllode (Acacia)
- Leaf modifications: Tendrils (pea), Spines (cactus), Pitcher (Nepenthes), Floral leaf (Bougainvillea)
- Inflorescence: Racemose (axis grows indefinitely) vs Cymose (terminal flower first)
💡 Tips & Tricks
- Compositae (Sunflower): Epipetalous stamens — remember for MCQs
- Leguminosae: Diadelphous stamens (9+1); fruit = Legume/Pod; example — Pea
- Ginger = rhizome (underground stem, NOT root) — always a NEET trap!
- Cymose inflorescence: Terminal flower opens FIRST; Racemose: terminal opens LAST
High
Anatomy of Plants (Tissues)
- Meristematic tissue: Apical (tip growth), Lateral (girth — vascular + cork cambium), Intercalary (base of internodes)
- Simple permanent: Parenchyma (storage, photosynthesis), Collenchyma (support in young stems), Sclerenchyma (dead, hard support)
- Complex permanent: Xylem (water conduction, dead cells) and Phloem (food conduction, living cells)
- Dicot stem: VBs conjoint collateral open, arranged in ring; Monocot stem: VBs scattered, closed
- Casparian strips (endodermis) prevent apoplastic water entry into root stele
💡 Tips & Tricks
- Xylem = dead cells (tracheids + vessels); Phloem = living (sieve tubes + companion cells)
- Secondary growth: Vascular cambium (secondary xylem/phloem) + Cork cambium (bark)
- Annual rings = layers of secondary xylem, used to determine plant age (dendrochronology)
🧠 Key Difference: Dicot root has radial vascular bundle (xylem and phloem alternating). Dicot stem has conjoint collateral vascular bundle. Monocot stem has scattered vascular bundles — no secondary growth!
Medium
Animal Tissues & Frog Anatomy
📄 Syllabus
Animal tissues; Morphology, anatomy and functions of different systems (digestive, circulatory, respiratory, nervous and reproductive) of Frog
- Epithelial tissue: Squamous, cuboidal, columnar, ciliated, compound (stratified)
- Connective tissue: Loose (areolar), Dense, Specialised (bone, blood, cartilage)
- Muscular: Striated (voluntary), Smooth (involuntary), Cardiac (striated involuntary)
- Frog: Ectothermic, 3-chambered heart, cutaneous respiration, cranial nerves = 10 pairs
💡 Tips & Tricks
- Blood = connective tissue (fluid matrix = plasma); Cartilage = avascular
- Cardiac muscle = involuntary but striated — unique combination!
- Frog breathes through: lungs + skin (cutaneous) + buccal cavity
03
Cell Structure and Function
Cell theory, organelles, biomolecules, enzymes, cell division
Very High
Cell Organelles — Structure & Function
📄 Syllabus
Structure of prokaryotic & eukaryotic cell; Cell envelope, membrane, wall; Cell organelles — structure & function; Endomembrane system; Cytoskeleton, cilia, flagella, centrioles; Nucleus
- Mitochondria: Double membrane, cristae (inner), matrix; ATP synthesis; own DNA + 70S ribosomes
- Chloroplast: Double membrane, grana (thylakoids), stroma; own DNA + 70S ribosomes
- Golgi: Cis face (receives from ER) → Trans face (ships to membrane/lysosome)
- Lysosome: “Suicidal bag”; hydrolytic enzymes; autophagy and autolysis
- Nucleus: Nuclear envelope (double membrane + pores), nucleolus (rRNA synthesis), chromatin
💡 Tips & Tricks
- Mitochondria & Chloroplasts = semi-autonomous (own DNA + 70S ribosomes like bacteria)
- Prokaryotes: 70S ribosomes; Eukaryote cytoplasm: 80S ribosomes
- Smooth ER = lipid synthesis; Rough ER = protein synthesis (ribosomes attached)
- Peroxisomes = contain catalase; degrade H₂O₂; abundant in liver cells
🧠 NEET Classic: Ribosomes are present in ALL living cells (prokaryotes + eukaryotes). They are NOT membrane-bound. Mitochondria & plastids have 70S ribosomes — supports Endosymbiotic theory. “S” = Svedberg unit (sedimentation coefficient).
Very High
Biomolecules
📄 Syllabus
Chemical constituents of living cells: Biomolecules — structure and function of proteins, carbohydrates, lipids, nucleic acids; Enzymes — types, properties, enzyme action, classification and nomenclature
- Carbohydrates: Monosaccharides (glucose, fructose), Disaccharides (sucrose, lactose), Polysaccharides (starch, glycogen, cellulose)
- Proteins: 20 amino acids + peptide bond; Primary → Secondary → Tertiary → Quaternary structure
- Lipids: Phospholipids (bilayer membrane), Steroids, Waxes; NOT polymers (no glycosidic/peptide bonds)
- Nucleic acids: DNA (deoxyribose + ATGC); RNA (ribose + AUGC); Chargaff’s rule: A=T, G≡C
- Enzymes: Apoenzyme + Cofactor = Holoenzyme; Km = substrate affinity; competitive vs non-competitive inhibition
💡 Tips & Tricks
- Chargaff’s Rule: If A = 30%, then T = 30%, and G = C = 20%
- Competitive inhibition: Km increases, Vmax unchanged
- Non-competitive inhibition: Vmax decreases, Km unchanged
- Low Km = HIGH affinity (enzyme needs less substrate to reach half Vmax)
🧠 DNA structure: B-DNA, right-handed double helix; 3.4 Å per base pair; 34 Å per turn = 10 bp per turn; A-T = 2 hydrogen bonds; G-C = 3 hydrogen bonds. Higher GC content = higher melting temperature.
Very High
Cell Cycle, Mitosis & Meiosis
📄 Syllabus
Cell division: Cell cycle, mitosis, meiosis and their significance
- Interphase: G₁ (cell growth), S (DNA replication), G₂ (preparation for division)
- Mitosis stages: Prophase → Metaphase → Anaphase → Telophase + Cytokinesis
- Meiosis I (Reductional): Prophase I sub-stages — Leptotene, Zygotene, Pachytene, Diplotene, Diakinesis
- Meiosis II: Equational division (like mitosis); produces 4 haploid cells
- Significance: Mitosis = growth, repair, asexual reproduction; Meiosis = genetic variation, gamete formation
💡 Tips & Tricks
- Mnemonic for Mitosis: PMAT = Prophase, Metaphase, Anaphase, Telophase
- Mnemonic for Prophase I: Lazy Zebras Play Drums Daily = Leptotene, Zygotene, Pachytene, Diplotene, Diakinesis
- Crossing over = Pachytene; Synapsis = Zygotene; Best stage to count chromosomes = Metaphase
- S phase: DNA doubles but chromosome number stays the same
🧠 NEET Trap: In Anaphase I → homologous chromosomes separate (chromosome number reduces). In Anaphase II → sister chromatids separate (like mitosis). Cytokinesis in plant cells = cell plate method; in animal cells = cleavage furrow method.
04
Plant Physiology
Photosynthesis, respiration, plant growth and development
Very High
Photosynthesis
📄 Syllabus
Photosynthesis as means of autotrophic nutrition; Pigments; Photochemical and biosynthetic phases; Cyclic and non-cyclic photophosphorylation; Chemiosmotic hypothesis; Photorespiration; C3 and C4 pathways; Factors affecting photosynthesis
- Pigments: Chlorophyll a (primary), Chl b, Carotenoids (xanthophylls + carotenes) are accessory
- Light reactions: PS II (680 nm) → ETC → PS I (700 nm) → NADPH; Z-scheme; O₂ from photolysis of water
- Calvin Cycle (C3): CO₂ + RuBP → 2 × 3-PGA (catalysed by RuBisCO); produces G3P → glucose
- C4 pathway: OAA (C4 compound) formed in mesophyll → bundle sheath → Calvin cycle; no photorespiration
- CAM plants: Stomata open at NIGHT; CO₂ stored as malic acid; desert succulents (Opuntia, Agave)
💡 Tips & Tricks
- PS II = 680 nm; PS I = 700 nm — asked EVERY NEET year without fail!
- O₂ evolved from photolysis of WATER — proved by Van Niel’s hypothesis using isotopic tracer
- C4 plants (Maize, Sugarcane, Sorghum): No photorespiration, more efficient at high temp/light
- Blackman’s Law: Rate of photosynthesis limited by the factor present in minimum quantity
🧠 Calvin Cycle: 3CO₂ fixed per turn → 3 RuBP used → 6 G3P formed → 5 G3P regenerate RuBP → 1 G3P net gain. Per glucose (6CO₂): 18 ATP + 12 NADPH consumed. CO₂ acceptor = RuBP; first stable product = 3-PGA.
Very High
Respiration in Plants
📄 Syllabus
Exchange gases; Cellular respiration — glycolysis, fermentation (anaerobic), TCA cycle and ETS (aerobic); Energy relations — ATP generated; Amphibolic pathways; Respiratory quotient
- Glycolysis: Cytoplasm; 1 glucose → 2 pyruvate + 2 ATP (net) + 2 NADH; no O₂ required
- Krebs Cycle (TCA): Mitochondrial matrix; 2 Acetyl CoA → 6CO₂ + 8 NADH + 2 FADH₂ + 2 GTP
- ETS: Inner mitochondrial membrane; 1 NADH → 2.5 ATP; 1 FADH₂ → 1.5 ATP; O₂ = terminal acceptor
- Fermentation: Yeast → ethanol + CO₂; Muscle → lactic acid; anaerobic conditions
- RQ: Carbohydrates = 1.0; Fats = 0.7; Proteins ≈ 0.9; Organic acids > 1
💡 Tips & Tricks
- Total ATP per glucose (eukaryote): ~36–38 ATP
- Amphibolic pathway = Krebs cycle (both anabolic + catabolic functions)
- Oxidative phosphorylation via Chemiosmosis — Mitchell’s hypothesis
- RQ of malic acid > 1 (less O₂ needed relative to CO₂ produced)
High
Plant Growth & Development
📄 Syllabus
Seed germination; Phases of plant growth; Differentiation, dedifferentiation, redifferentiation; Sequence of developmental process; Growth regulators — auxin, gibberellin, cytokinin, ethylene, ABA
- Auxin (IAA): Apical dominance, phototropism (positive), geotropism, root initiation; Avena coleoptile test
- Gibberellin: Bolting (rosette plants), seed germination, fruit development, parthenocarpy
- Cytokinin: Cell division, shoot formation, delay senescence (Richmond-Lang effect)
- ABA (Abscisic acid): Stress hormone — closes stomata, seed dormancy, promotes senescence
- Ethylene: Fruit ripening, senescence, Triple response in pea seedlings; only gaseous hormone
💡 Tips & Tricks
- Only INHIBITORY hormone = ABA (all others are promoters in most contexts)
- Ethylene = only GASEOUS plant hormone; promotes abscission of leaves
- SDP (Short Day Plant) needs long dark period to flower; LDP needs short dark period
- Vernalization = prolonged cold treatment to induce early flowering (e.g., wheat, rye)
🧠 Memory Aid: A Girl Can Always Excel = Auxin, Gibberellin, Cytokinin, ABA, Ethylene. Growth curve = Sigmoid (S-shaped); Grand Period of Growth = period of maximum growth rate in the middle of the curve.
05
Human Physiology
Respiration, circulation, excretion, locomotion, neural & chemical coordination
Very High
Breathing & Respiration
📄 Syllabus
Respiratory system in humans; Mechanism of breathing & regulation; Exchange of gases; Transport of gases; Regulation of respiration; Respiratory volumes; Disorders — Asthma, Emphysema, Occupational respiratory disorders
- Lung volumes: TV = 500 mL, IRV = 3000 mL, ERV = 1100 mL, RV = 1200 mL
- Capacities: VC (Vital Capacity) = IRV + TV + ERV = 4600 mL; TLC = VC + RV = 5800 mL
- O₂ transport: 98.5% by Haemoglobin (oxyHb); 1.5% dissolved in plasma
- CO₂ transport: ~70% as HCO₃⁻ (bicarbonate); ~23% carbaminoHb; ~7% dissolved
- Bohr effect: ↑pCO₂ or ↓pH → ↓ Hb-O₂ affinity → O₂ released to tissues (right shift of curve)
💡 Tips & Tricks
- Chloride shift: HCO₃⁻ moves OUT of RBC, Cl⁻ moves IN (Hamburger’s phenomenon)
- pO₂ in alveoli = 104 mmHg; in deoxygenated blood = 40 mmHg → O₂ diffuses into blood
- Asthma = spasm of bronchioles; Emphysema = alveolar wall damage (common in smokers)
- FRC (Functional Residual Capacity) = ERV + RV
Very High
Body Fluids & Circulation
📄 Syllabus
Composition of blood, blood groups, coagulation; Lymph; Human circulatory system; Cardiac cycle, cardiac output, ECG, Double circulation; Disorders — Hypertension, CAD, Angina, Heart failure
- Blood: Plasma (55%) + Formed elements (45%): RBC (7.2 μm), WBC (12–20 μm), Platelets
- ABO blood groups: IA and IB codominant, i recessive; O = universal donor; AB = universal recipient
- Cardiac cycle: Atrial systole → Ventricular systole → Joint diastole; Total = 0.8 sec; HR = 72/min
- Cardiac output = Heart Rate × Stroke Volume = 72 × 70 mL ≈ 5 L/min
- ECG: P wave = atrial depolarization; QRS = ventricular depolarization; T = ventricular repolarization
💡 Tips & Tricks
- SA node (sinoatrial) = natural pacemaker; generates impulse at 72 beats/min
- Purkinje fibres = fastest conduction in heart; AV node = slowest (allows ventricular filling)
- Lubb (1st sound) = AV valves close; Dupp (2nd sound) = semilunar valves close
- Normal BP = 120/80 mmHg; Hypertension = ≥ 140/90 mmHg
Very High
Excretory Products & Their Elimination
📄 Syllabus
Modes of excretion; Human excretory system; Urine formation; Osmoregulation; Regulation — Renin-angiotensin, ANF, ADH, Diabetes insipidus; Disorders — Uraemia, Renal failure, Nephritis; Dialysis
- Excretion modes: Ammonotelism (bony fish), Ureotelism (mammals), Uricotelism (birds, reptiles)
- Nephron: Bowman’s capsule → PCT → Loop of Henle (desc + asc) → DCT → Collecting duct
- GFR = 125 mL/min; 180 L/day filtered → only 1.5 L urine excreted (99% reabsorption)
- ADH: ↑ water reabsorption in DCT/collecting duct; Aldosterone: ↑ Na⁺ reabsorption in DCT
- Counter-current mechanism (Loop of Henle): Creates osmotic gradient in medulla for urine concentration
💡 Tips & Tricks
- Ascending limb of LoH = impermeable to water; actively transports NaCl out
- ANF (Atrial Natriuretic Factor) = ↓ BP; opposes ADH and aldosterone effects
- JG cells secrete Renin → Angiotensin I → ACE → Angiotensin II → Aldosterone
- Renal threshold for glucose = 180 mg/dL; above this → glucosuria (sign of diabetes)
High
Locomotion & Movement
📄 Syllabus
Types of movement; Skeletal muscle — contractile proteins and muscle contraction; Skeletal system; Joints; Disorders — Myasthenia gravis, Tetany, Muscular dystrophy, Arthritis, Osteoporosis, Gout
- Sarcomere: Z line to Z line; A band (myosin filaments), I band (actin only), H zone (myosin only)
- Sliding filament theory: Ca²⁺ → binds Troponin → moves Tropomyosin → exposes actin binding sites → myosin pulls actin
- During contraction: H zone disappears, I band shortens, A band REMAINS CONSTANT
- 206 bones in adult: Axial skeleton (80) + Appendicular skeleton (126)
💡 Tips & Tricks
- ATP needed for BOTH contraction AND relaxation; Rigor mortis = ATP exhausted after death
- Myasthenia gravis = autoimmune disease; antibodies block ACh receptors at NMJ
- Osteoporosis = ↓ bone density (common in post-menopausal women, ↓ oestrogen)
- Gout = excess uric acid → crystal deposits in joints (especially big toe)
Very High
Neural Control & Coordination
📄 Syllabus
Neuron and nerves; Nervous system in humans — CNS, PNS, visceral; Generation and conduction of nerve impulse
- Neuron: Dendrite → Cell body (soma) → Axon → Synaptic knob; Schwann cells form myelin sheath
- Resting membrane potential = −70 mV; maintained by Na⁺-K⁺ ATPase pump (3Na⁺ out, 2K⁺ in)
- Action potential: Depolarization (Na⁺ in) → Repolarization (K⁺ out) → Hyperpolarization
- Synapse: Neurotransmitter (ACh, dopamine, GABA) bridges presynaptic → postsynaptic
- CNS: Brain + Spinal cord; PNS: Somatic (voluntary) + Autonomic (involuntary)
💡 Tips & Tricks
- All-or-none law: Action potential is always of same magnitude once threshold is reached
- Knee-jerk reflex = monosynaptic (no interneuron between sensory and motor neuron)
- Cerebrum = voluntary actions, speech, memory; Cerebellum = balance, posture
- Medulla oblongata = controls heartbeat, breathing, swallowing (vital centres)
High
Chemical Coordination & Regulation
📄 Syllabus
Endocrine glands and hormones; Human endocrine system — Hypothalamus, Pituitary, Pineal, Thyroid, Parathyroid, Adrenal, Pancreas, Gonads; Mechanism of hormone action; Common disorders
- Pituitary: Anterior (GH, TSH, ACTH, FSH, LH, Prolactin) + Posterior (ADH, Oxytocin)
- Thyroid: T₃ and T₄ (metabolic rate); Calcitonin (↓ blood Ca²⁺)
- Parathyroid: PTH (↑ blood Ca²⁺; stimulates osteoclasts + renal Ca²⁺ reabsorption)
- Adrenal cortex: Cortisol (stress, anti-inflammatory), Aldosterone; Medulla: Adrenaline, Noradrenaline
- Pancreas: β-cells → Insulin (↓ glucose); α-cells → Glucagon (↑ glucose)
💡 Tips & Tricks
- Hypothalamus = master of masters; controls anterior pituitary via releasing/inhibiting hormones
- Cretinism = hypothyroidism in children (stunted physical + mental growth)
- Acromegaly = excess GH in adults (enlarged bones of hands, feet, jaw)
- Diabetes insipidus = ↓ ADH → excess dilute urine; Diabetes mellitus = ↓ insulin/resistance
🧠 Steroid vs Peptide Hormones: Steroid hormones (cortisol, sex hormones) = lipid-soluble → enter cell → act on DNA → slow but long-lasting. Peptide hormones (insulin, glucagon) = water-soluble → bind surface receptor → second messenger (cAMP) → fast but short-lived.
06
Reproduction
Sexual reproduction in flowering plants, human reproduction, reproductive health
Very High
Sexual Reproduction in Flowering Plants
📄 Syllabus
Flower structure; Development of male and female gametophytes; Pollination; Outbreeding devices; Pollen-Pistil interaction; Double fertilization; Post-fertilization events; Apomixis, parthenocarpy, polyembryony
- Male gametophyte (pollen grain): 3-celled — 1 tube cell + 2 male gametes (generative cell divides)
- Female gametophyte (embryo sac): 7 cells, 8 nuclei — 3 antipodal + 2 synergid + 1 egg + 2 polar nuclei
- Double fertilization: Sperm 1 + Egg = Zygote (2n); Sperm 2 + 2 polar nuclei = PEN → Endosperm (3n)
- Endosperm: Nutritive tissue for embryo; develops BEFORE embryo; coconut water = liquid endosperm
- Apomixis = seed without fertilization; Parthenocarpy = fruit without fertilization (seedless)
💡 Tips & Tricks
- Double fertilization = UNIQUE to Angiosperms only!
- Endosperm = triploid (3n); Embryo = diploid (2n); zygote → embryo development
- Pollen tube enters ovule through Micropyle → releases gametes near synergids
- Polyembryony (multiple embryos): Citrus, Mango, Groundnut; nucellus forms extra embryos
Very High
Human Reproduction
📄 Syllabus
Male and female reproductive systems; Gametogenesis — spermatogenesis & oogenesis; Menstrual cycle; Fertilisation, embryo development up to blastocyst, implantation; Pregnancy and placenta formation; Parturition; Lactation
- Spermatogenesis: Seminiferous tubules; Sertoli cells = nurse cells; Leydig cells = testosterone
- Oogenesis: Primary oocyte arrested in Prophase I; Secondary oocyte arrested in Metaphase II until fertilization
- Menstrual cycle (28 days): Follicular phase (1–13) → Ovulation (Day 14, LH surge) → Luteal phase (15–28)
- Fertilization → Cleavage (no growth) → Morula → Blastocyst → Implantation (Day 7, into endometrium)
- Placenta: Secretes hCG, oestrogen, progesterone; maintains pregnancy; O₂ + nutrients exchange
💡 Tips & Tricks
- Acrosome = modified Golgi/lysosome; contains hyaluronidase to penetrate zona pellucida
- hCG (human chorionic gonadotropin) = maintains corpus luteum in early pregnancy (basis of pregnancy test)
- Parturition triggered by Oxytocin (Ferguson reflex — positive feedback)
- Gestation period = ~280 days (40 weeks) from LMP; ~266 days from fertilization
Medium
Reproductive Health
📄 Syllabus
Need for reproductive health & prevention of STDs; Birth control — methods & contraception; MTP; Amniocentesis; Infertility and ART — IVF, ZIFT, GIFT
- Contraception: Barrier (condom, diaphragm), IUD (copper/hormonal), Hormonal pills, Surgical (vasectomy, tubectomy)
- IVF = test tube baby; embryo transferred to fallopian tube (ZIFT) or uterus at 8-cell stage
- GIFT = Gamete Intra-Fallopian Transfer; ICSI = sperm injected directly into egg
- Amniocentesis: Tests for chromosomal abnormalities using amniotic fluid; sex determination banned in India
💡 Tips & Tricks
- Cu-T IUD: Cu²⁺ ions spermicidal; Hormonal IUD: prevents implantation
- STDs: Gonorrhoea (Neisseria gonorrhoeae), Syphilis (Treponema pallidum), HIV (Retrovirus)
- MTP (Medical Termination of Pregnancy) legal up to 20 weeks in India (24 weeks in special cases)
07
Genetics and Evolution
Mendelian genetics, molecular basis of inheritance, chromosomal disorders, evolution
Very High
Heredity & Variation — Mendelian Genetics
📄 Syllabus
Mendelian Inheritance; Deviations — Incomplete dominance, Co-dominance, Multiple alleles; Pleiotropy; Polygenic inheritance; Chromosome theory; Sex determination; Linkage and crossing over; Sex-linked inheritance — Haemophilia, Colour blindness; Mendelian & Chromosomal disorders
- Mendel’s Laws: Law of Segregation (alleles separate during gamete formation) + Law of Independent Assortment
- Monohybrid ratio: 3:1 (phenotypic); 1:2:1 (genotypic); Testcross: 1:1
- Dihybrid ratio: 9:3:3:1; Incomplete dominance → 1:2:1 phenotypic (e.g., Snapdragon flower)
- ABO blood groups: IA and IB are codominant; i is recessive; Multiple allelism
- Chromosomal disorders: Down (Trisomy 21, 47 chromosomes), Turner (45, XO), Klinefelter (47, XXY)
💡 Tips & Tricks
- Incomplete dominance: F2 ratio 1:2:1 (all phenotypically different); co-dominance: both alleles expressed
- Sons get their X chromosome from MOTHER, Y from father — key for sex-linked problems
- Haemophilia and colour blindness = X-linked recessive; carrier females, mostly affected males
- Linkage (Morgan, Drosophila): genes on same chromosome → less recombination
🧠 NEET GOLD: Punnett square problems appear EVERY year. Practice all types — monohybrid, dihybrid, test cross, sex-linked, ABO blood groups, and chromosomal disorder identification. Thalassemia = autosomal recessive; Sickle cell anemia = autosomal recessive.
Very High
Molecular Basis of Inheritance
📄 Syllabus
Search for genetic material; Structure of DNA and RNA; DNA packaging; DNA replication; Central dogma; Transcription, genetic code, translation; Gene expression — Lac Operon; Human genome project; DNA fingerprinting
- Key experiments: Griffith (transformation) → Avery et al. (DNA = transforming principle) → Hershey-Chase (phage, P³² in DNA confirms)
- DNA replication: Semi-conservative (Meselson-Stahl with ¹⁵N); Leading = continuous; Lagging = Okazaki fragments
- Genetic code: 64 codons; 61 sense (amino acids) + 3 stop codons (UAA, UAG, UGA); AUG = start codon (Methionine)
- Properties of genetic code: Triplet, degenerate (multiple codons for same AA), non-ambiguous, universal, non-overlapping
- Lac operon: Inducible; in presence of lactose (allolactose) → repressor displaced → structural genes ON
💡 Tips & Tricks
- Chargaff: A = T (2 H-bonds); G = C (3 H-bonds); if %G given → %C = same; %A = %T = (100 − 2×G)/2
- RNA polymerase in bacteria: Sigma factor recognizes promoter; no primer needed (unlike DNA pol)
- Exons are EXpressed; Introns are INterrupting sequences (removed by splicing in eukaryotes)
- HGP: 3 × 10⁹ base pairs; ~25,000 genes; ~99.9% identical among humans; completed 2003
High
Evolution
📄 Syllabus
Origin of life; Biological evolution and evidences; Darwin’s contribution; Modern Synthetic theory; Mechanism of evolution — Mutation, Recombination and Natural Selection; Gene flow and genetic drift; Hardy-Weinberg principle; Adaptive Radiation; Human evolution
- Miller-Urey experiment (1953): CH₄ + NH₃ + H₂ + H₂O + electric sparks → amino acids
- Oparin-Haldane theory: Primordial soup (reducing atmosphere) → chemical origin of life
- H-W principle: p² + 2pq + q² = 1; p + q = 1; no evolution when in equilibrium
- H-W equilibrium disturbed by: Mutation, Gene flow, Genetic drift, Non-random mating, Natural selection
- Human evolution: Dryopithecus → Ramapithecus → Australopithecus → H. habilis → H. erectus → H. sapiens
💡 Tips & Tricks
- Industrial melanism (Biston betularia, peppered moth) = classic directional natural selection example
- Homologous organs = same origin, different function → evidence of divergent evolution (common ancestry)
- Analogous organs = different origin, same function → evidence of convergent evolution
- Natural selection types: Stabilising (common phenotype favoured), Directional, Disruptive
08
Biology and Human Welfare
Health & disease, pathogens, immunology, microbes in human welfare
High
Health, Disease & Immunity
📄 Syllabus
Health and Disease; Pathogens; Diseases — Malaria, Filariasis, Ascariasis, Typhoid, Pneumonia, Common cold, Amoebiasis, Ringworm, Dengue, Chikungunya; Immunology — vaccines; Cancer, HIV/AIDS; Drug and alcohol abuse
- Malaria: Plasmodium falciparum (malignant/most dangerous); vector = female Anopheles mosquito
- Dengue: Aedes aegypti mosquito; cause of dengue haemorrhagic fever
- Typhoid: Salmonella typhi; Widal test; intestinal perforations in severe cases
- Immunity: Innate (non-specific) + Adaptive (specific: B cells → Humoral; T cells → Cell-mediated)
- HIV: Retrovirus; reverse transcriptase; attacks CD4⁺ T-helper cells; AIDS = immune failure
💡 Tips & Tricks
- Active immunity = long-lasting (body produces antibodies); Passive = immediate but short (antibodies given externally)
- Colostrum (first breast milk) = rich in IgA; provides passive immunity to newborn
- ELISA detects HIV antibodies; Western blot = confirmatory test
- Cancers: Benign (non-spreading) vs Malignant (metastatic); carcinogens + oncogenes cause cancer
🧠 Disease Causative Organisms: Ringworm = Microsporum (fungi, not worm!); Amoebiasis = Entamoeba histolytica (protozoan); Filariasis = Wuchereria bancrofti (filarial worm); Pneumonia = Streptococcus pneumoniae; Common cold = Rhinovirus.
Medium
Microbes in Human Welfare
📄 Syllabus
Microbes in household food processing, industrial production, sewage treatment, energy generation and as biocontrol agents and biofertilizers
- Household: Lactobacillus (curd, cheese); Yeast (bread, wine, beer); Aspergillus niger (citric acid production)
- Industrial: Penicillin from Penicillium notatum; Cyclosporin A (immunosuppressant) from Trichoderma polysporum
- Sewage: Primary (physical) → Secondary (aerobic bacteria, reduces BOD) → Tertiary treatment
- Energy: Methane/Biogas from Methanobacterium (anaerobic); Gobar gas plants
- Biofertilizers: Rhizobium (legume root nodules), Anabaena + Azolla (paddy fields), Mycorrhiza (phosphorus absorption)
💡 Tips & Tricks
- BOD (Biochemical Oxygen Demand): Higher BOD = MORE polluted water (more organic matter for bacteria to decompose)
- Biocontrol: Bacillus thuringiensis (Bt) against insect larvae; Trichoderma against plant fungal pathogens
- Mycorrhiza = fungal symbiosis with plant roots; aids in phosphorus and water absorption
09
Biotechnology and Its Applications
Genetic engineering, recombinant DNA technology, applications in health and agriculture
Very High
Principles & Tools of Biotechnology
📄 Syllabus
Principles and process of Biotechnology: Genetic engineering (Recombinant DNA technology)
- Restriction Endonucleases: Cut at palindromic sequences; EcoRI cuts at GAATTC → sticky ends
- Vectors: pBR322 plasmid (ori, ampR, tetR), bacteriophage lambda, Cosmid, BAC, YAC
- PCR (Polymerase Chain Reaction): Denaturation (94°C) → Annealing (54°C) → Extension (72°C by Taq polymerase)
- Gel electrophoresis: DNA moves toward +ve electrode; smaller fragments move farther; stained with EtBr, visualised under UV
- Blotting: Southern (DNA), Northern (RNA), Western (Protein) — SNoW DRoP rule
💡 Tips & Tricks
- Restriction enzymes = molecular scissors; DNA Ligase = molecular glue (seals nicks)
- pBR322: insertional inactivation of tetR → recombinant (grows on ampicillin, not tetracycline)
- Competent cells: Ca²⁺ treatment → E. coli takes up plasmid DNA
- SNoW DRoP: Southern = DNA; Northern = RNA; Western = Protein
🧠 pBR322 features: ori (replication origin), ampR gene (ampicillin resistance), tetR gene (tetracycline resistance). Restriction sites lie within tetR → insert gene here → cells lose tetR (cannot grow on Tet plate) but retain ampR → recombinants identified.
Very High
Applications in Health & Agriculture
📄 Syllabus
Application in health and agriculture: Human insulin and vaccine production, gene therapy; Genetically modified organisms — Bt crops; Transgenic Animals; Biosafety issues — Biopiracy and patents
- Insulin: Humulin (1982, Eli Lilly) = first rDNA product; A and B chains in E. coli → joined in vitro
- Bt crops: Cry proteins from Bacillus thuringiensis; Cry1Ac → bollworm; Cry1Ab → corn borer
- Golden Rice: β-carotene (Vitamin A precursor) genes introduced — addresses Vit A deficiency
- Gene therapy: ADA (Adenosine Deaminase) deficiency = first gene therapy success (1990)
- RNAi: dsRNA → silences specific mRNA; used against Meloidogyne nematode in tobacco roots
💡 Tips & Tricks
- Cry proteins = protoxin (inactive in Bt) → activated by alkaline pH of insect gut → toxic to larva
- Biopiracy = use of traditional bio-resources/knowledge without permission or compensation
- Transgenic animals: Rosie the cow → produces human α-lactalbumin in milk; used in research
- Bioreactor: Sparged stirred-tank; bubbled with O₂; downstream processing isolates final product
10
Ecology and Environment
Organisms & populations, ecosystem, biodiversity and conservation
Very High
Organisms & Populations
📄 Syllabus
Organisms and environment; Population interactions — mutualism, competition, predation, parasitism; Population attributes — growth, birth rate and death rate, age distribution
- Population attributes: Birth rate, death rate, sex ratio, age pyramids (progressive, stable, regressive)
- Exponential growth: dN/dt = rN → J-shaped curve (unlimited resources)
- Logistic growth: dN/dt = rN(K−N)/K → S-shaped curve (K = carrying capacity)
- Species interactions: Mutualism (+/+), Commensalism (+/0), Amensalism (0/−), Parasitism (+/−), Competition (−/−), Predation (+/−)
💡 Tips & Tricks
- Gause’s Competitive Exclusion Principle: Two species competing for identical niche CANNOT coexist indefinitely
- Orchid growing on mango tree = Commensalism (orchid benefits, mango unaffected — not parasitism!)
- Predation: Prey adaptations — cryptic colouration, mimicry, chemical defence (monarch butterfly)
- Mycorrhiza = mutualism between fungus and plant roots (+/+ relationship)
Very High
Ecosystem
📄 Syllabus
Ecosystem: Patterns, components; productivity and decomposition; Energy flow; Pyramids of number, biomass, energy
- GPP (Gross Primary Productivity) = NPP + Respiration; NPP = available for consumers
- Lindemann’s 10% law: Only 10% of energy transferred to next trophic level (90% lost as heat)
- Pyramid of energy: ALWAYS upright — energy decreases at each trophic level
- Pyramid of biomass: Inverted in aquatic ecosystems (small phytoplankton biomass supports large zooplankton)
- Decomposition: Fragmentation → Leaching → Catabolism → Humification → Mineralisation
💡 Tips & Tricks
- Pyramid of numbers: Inverted in tree ecosystem (1 tree supports many insects supports few birds)
- Primary succession on bare rock: Lichens (pioneer) → Mosses → Herbs → Shrubs → Forest (climax)
- Secondary succession (on disturbed but soil-present land): Faster than primary
- N-cycle: Fixation (Rhizobium) → Nitrification (Nitrosomonas → Nitrobacter) → Denitrification (Pseudomonas)
🧠 Standing crop: Amount of biomass/energy present at a given time. Standing state = amount of nutrients in the abiotic component. Detritivores (earthworm) physically break down detritus; decomposers (fungi, bacteria) chemically degrade it.
Very High
Biodiversity & Conservation
📄 Syllabus
Concept, Patterns, Importance of Biodiversity; Loss of Biodiversity; Biodiversity conservation; Hotspots, endangered organisms, extinction, Red Data Book, biosphere reserves, national parks and sanctuaries, Sacred Groves
- Types of biodiversity: Alpha (within a community), Beta (between habitats), Gamma (geographic-scale)
- India’s 4 biodiversity hotspots: Himalayas, Western Ghats, Indo-Burma, Sundaland
- Major causes of biodiversity loss (HIPPO): Habitat loss, Invasive species, Pollution, Population (over-exploitation), Over-exploitation
- In-situ conservation: National parks, Wildlife sanctuaries, Biosphere reserves, Sacred groves (community-based)
- Ex-situ conservation: Zoos, Botanical gardens, Seed banks, Cryopreservation, Gene banks
💡 Tips & Tricks
- Biodiversity hotspot criteria (Norman Myers): >1500 endemic plant species + lost >70% of original habitat
- Red Data Book (IUCN): Critically Endangered (CR), Endangered (EN), Vulnerable (VU), Near Threatened (NT)
- Sacred groves best examples: Meghalaya (Khasi), Rajasthan (Bishnoi community — protects Blackbuck)
- Earth has ~8.7 million species estimated; only ~1.5 million formally described
🧠 HIPPO: Habitat loss (largest cause globally), Invasive species, Pollution, Population growth/over-exploitation, Over-hunting. Sacred groves = traditional in-situ conservation — community forest patches treated as sacred, no cutting allowed.
📅
Smart Study Plan for NEET 2027
⚡ Priority Order — Based on Official Syllabus Weightage
| Priority | Unit | Expected Questions | Difficulty | Key Focus Areas |
|---|---|---|---|---|
| 🔴 1st | Unit 7: Genetics & Evolution | 15–18 | High | Punnett squares, DNA replication, Lac operon, Hardy-Weinberg |
| 🔴 2nd | Unit 5: Human Physiology | 12–15 | High | All systems + numerical values, ECG, hormones, disorders |
| 🟡 3rd | Unit 10: Ecology & Environment | 10–12 | Medium | 10% law, population equations, biodiversity hotspots |
| 🟡 4th | Unit 3: Cell Structure & Function | 8–10 | Medium-High | Organelle functions, biomolecules, meiosis Prophase I |
| 🟡 5th | Unit 4: Plant Physiology | 8–10 | Medium-High | C3/C4/CAM, Krebs cycle, plant hormones table |
| 🟡 6th | Unit 9: Biotechnology | 8–10 | Medium | PCR steps, restriction enzymes, pBR322, Bt crops |
| 🟢 7th | Unit 6: Reproduction | 8–10 | Medium | Double fertilization, embryo sac structure, menstrual cycle |
| 🟢 8th | Unit 1: Diversity in Living World | 5–7 | Low-Medium | Five kingdom features, animal phylum examples |
| 🟢 9th | Unit 2: Structural Organisation | 4–6 | Low-Medium | Plant anatomy, plant families, animal tissues |
| 🟢 10th | Unit 8: Biology & Human Welfare | 5–7 | Low | Disease causative agents, immunity types, microbes in welfare |
📆 12-Month Study Timeline
Months 1–3: Foundation
- Complete NCERT Class 11 Biology
- Units 1, 2, 3, 4 — 1st full reading
- Make topic-wise notes
- Draw all diagrams from memory
- 30 MCQs daily (basic level)
Months 4–6: Core Units
- Unit 5 — Human Physiology deep dive
- Unit 7 — Genetics & Molecular Biology
- Previous year MCQs (2015–2024)
- Weekly mock tests
- Maintain daily error journal
Months 7–9: Class 12 Units
- Units 6, 8, 9, 10 (Class 12)
- Ecology numerical problems
- Biotechnology diagrams & processes
- Bi-weekly full mock tests
- 1st complete revision of all units
Months 10–12: Revision Sprint
- NCERT cover-to-cover revision
- All 10 years PYQs — 2nd round
- Weak topic targeted practice
- Daily full mock test (3 hours)
- Revision notes only — no new topics
🏆 NEET 2027 Biology — Golden Rules for 340+
📖 Rule 1 — NCERT is the Bible
- 80% of NEET Biology questions come directly from NCERT text
- Read every line, every table, every footnote, every example
- NCERT diagrams are asked as MCQs — study every label
✍️ Rule 2 — Active Note-making
- One-page chapter summary for each chapter
- Comparison tables: C3 vs C4, mitosis vs meiosis, prokaryote vs eukaryote
- Flowcharts for processes: DNA replication, Krebs cycle, cardiac cycle
📊 Rule 3 — Numbers Are Marks
- Memorise all key numerical values in biology
- GFR (125 mL/min), cardiac output (5 L/min), lung volumes
- PS I (700 nm), PS II (680 nm), DNA dimensions (3.4Å/bp)
🎯 Rule 4 — PYQs are Goldmines
- Solve 10 years of previous NEET Biology papers
- ~40% of questions repeat in similar form year after year
- Track high-frequency chapters and topics from PYQs
🧠 Rule 5 — Teach to Learn
- Use the Feynman Technique: explain concepts as if teaching a junior
- If you can’t explain it simply, you don’t know it well enough
- Best applied to: Krebs cycle, DNA replication, hormonal regulation
⚡ Rule 6 — Diagrams Every Day
- Draw 2 biology diagrams from memory every single day
- Label everything — NEET frequently tests diagram labels
- Priority diagrams: nephron, sarcomere, embryo sac, DNA helix, heart
🗓️ Last Updated: May 2026 | Based on Official NMC NEET UG 2026–27 Syllabus
NCERT is Enough
80% of NEET Biology questions come directly from NCERT Class 11 & 12 textbooks.
Unit 7 = Highest Weightage
Genetics & Evolution alone contributes 15–18 questions. Never skip it.
Start Early, Revise Often
A 12-month plan with 3 revisions gives the highest chance of 340+ in biology.
Official NMC Syllabus
This guide covers all 10 units as notified by NMC (Public Notice: 08.01.2026).
❓ Frequently Asked Questions — NEET 2027 Biology
Everything NEET aspirants ask about Biology preparation, syllabus, and strategy for 2027.
Unit 7 — Genetics and Evolution has the highest weightage in NEET Biology, contributing approximately 15–18 questions every year. It covers Mendelian genetics, molecular basis of inheritance (DNA replication, transcription, translation), Lac operon, chromosomal disorders, and evolution including Hardy-Weinberg principle. This unit alone can make or break your NEET Biology score, so treat it as your top priority.
Yes, NCERT is the foundation and covers 80% of NEET Biology questions directly. However, to score 360/360, you need to:
- Read NCERT Class 11 and Class 12 Biology line by line, including footnotes and captions
- Study every NCERT diagram and know every label
- Practice all previous year NEET questions (10 years minimum)
- For the remaining 20%, refer to standard books like Trueman’s Biology or NCERT Exemplar
Based on previous year NEET papers, Genetics and Evolution (Unit 7) consistently contributes the most questions:
- Principles of Inheritance: 4–6 questions (Punnett squares, blood groups, linkage)
- Molecular Basis of Inheritance: 5–7 questions (DNA, replication, transcription, Lac operon)
- Evolution: 2–4 questions (Hardy-Weinberg, origin of life, natural selection)
As per the official NMC (National Medical Commission) notified syllabus for NEET UG 2026–27 (Public Notice dated 08.01.2026), there are 10 units in NEET Biology:
- Unit 1: Diversity in Living World
- Unit 2: Structural Organisation in Animals and Plants
- Unit 3: Cell Structure and Function
- Unit 4: Plant Physiology
- Unit 5: Human Physiology
- Unit 6: Reproduction
- Unit 7: Genetics and Evolution
- Unit 8: Biology and Human Welfare
- Unit 9: Biotechnology and Its Applications
- Unit 10: Ecology and Environment
The best 12-month plan for NEET 2027 Biology is:
- Months 1–3: Complete NCERT Class 11 Biology (Units 1–4). Make notes, draw diagrams.
- Months 4–6: Focus on Human Physiology (Unit 5) and Genetics & Evolution (Unit 7). Start previous year questions.
- Months 7–9: Cover Class 12 units — Reproduction, Biotechnology, Ecology, Human Welfare. Take bi-weekly mock tests.
- Months 10–12: Full revision, daily mocks, error journal review, only NCERT and notes — no new material.
Unit 10 — Ecology and Environment is one of the high-scoring units in NEET Biology, contributing approximately 10–12 questions (around 14% of Biology questions). Key topics with highest frequency are:
- Organisms & Populations (population growth models, species interactions)
- Ecosystem (10% energy law, pyramids of number/biomass/energy, nutrient cycling)
- Biodiversity & Conservation (hotspots, HIPPO, in-situ vs ex-situ conservation)
From Class 11 Biology (Units 1–5), the most important chapters for NEET are:
- Cell Structure and Function — Organelles, Biomolecules, Cell Division (Unit 3)
- Plant Physiology — Photosynthesis (C3/C4/CAM), Respiration, Plant Hormones (Unit 4)
- Human Physiology — All 6 chapters: Breathing, Circulation, Excretion, Locomotion, Neural Control, Chemical Coordination (Unit 5)
- Animal Kingdom — Phyla features and examples (Unit 1)
- Anatomy of Flowering Plants — Tissue types, dicot/monocot anatomy (Unit 2)
Scoring 340+ out of 360 in NEET Biology is achievable with the right strategy:
- 📖 NCERT cover-to-cover: Read every word of Class 11 and 12 Biology — no skipping
- 🎯 Master high-weightage units first: Genetics (Unit 7), Human Physiology (Unit 5), Ecology (Unit 10)
- 📊 Memorise key numbers: GFR, cardiac output, lung volumes, ATP counts, PS I/II wavelengths
- ✍️ Draw diagrams daily: Nephron, sarcomere, embryo sac, DNA helix, cardiac cycle
- 🔁 10 years PYQs (Previous Year Questions): Solve and analyse every single question
- 📝 Error journal: Write down every wrong answer and the correct concept — review weekly
- 🧪 Mock tests: Take 1 full Biology section mock every week from Month 6 onwards