NEET Biology Notes PDF 2027 | Class 11 & 12

NEET 2026 - Class 11 Ch2 Biological Classification 🦠 Chapter 2: Biological Classification Class 11 + NEET 50 Detailed MCQs with Explanation | New NCERT Based Q1. The father of modern taxonomy is a) Aristotle b) Carolus Linnaeus c) Whittaker d) Darwin Explanation: Carolus Linnaeus ne Binomial nomenclature diya. Systema Naturae book likhi. 2 name system - Genus + species. Q2. Five kingdom classification was given by a) Linnaeus b) Whittaker c) Copeland d) Aristotle Explanation: R.H. Whittaker 1969 me. Kingdoms: Monera, Protista, Fungi, Plantae, Animalia. Basis: cell structure, nutrition, body organization. Q3. Assertion: Viruses are not placed in any kingdom. Reason: They are obligate intracellular parasites. a) Both true, Reason correct explanation b) Both true, Reason not correct explanation c) Assertion true, Reason false d) Both false Explanation: Dono sahi. Virus living + non-living ke beech. Host ke bahar inert crystal, andar multiply....

NEET 2027 - Chapter 3 Reproductive Health DETAILED 👶 Chapter 3: Reproductive Health DETAILED + EXPLANATION 50 NEET MCQs with Explanation | New NCERT Based Q1. The world population day is celebrated on a) 11 July b) 5 June c) 16 October d) 1 December Explanation: 11 July ko World Population Day manaya jata hai. Purpose: population explosion ke problems ke bare me awareness. Q2. Assertion: Medical Termination of Pregnancy is legal in India. Reason: It was legalized in 1971 under MTP Act. a) Both true, Reason correct explanation b) Both true, Reason not correct explanation c) Assertion true, Reason false d) Both false Explanation: Dono sahi hain. MTP Act 1971 me bana tha. Unsafe abortion se maternal mortality kam karne ke liye. Q3. Which is NOT a natural method of contraception? a) Periodic abstinence b) Coitus interruptus c) Lactational amenorrhea d) Copper-T Explanation: Copper-T artificial/IUD method hai. Natural methods me koi device ya d...

NEET HARD - Ch2 Human Reproduction 🧬 Chapter 2: Human Reproduction - HARD LEVEL NEET 2027 Q1. Assertion: Spermatogenesis is temperature dependent. Reason: Scrotum provides 2-3°C lower temperature than body. a) Both true, Reason correct explanation b) Both true, Reason not correct explanation c) Assertion true, Reason false d) Both false Q2. Match List-I with List-II: A. Leydig cells - 1. Nourishment of sperm, B. Sertoli cells - 2. Testosterone, C. Acrosome - 3. Hyaluronidase, D. Middle piece - 4. Mitochondria a) A-2, B-1, C-3, D-4 b) A-1, B-2, C-4, D-3 c) A-2, B-3, C-1, D-4 d) A-4, B-1, C-2, D-3 Q3. Which of the following statements is INCORRECT regarding menstrual cycle? a) LH surge induces rupture of Graafian follicle b) Progesterone is secreted by corpus luteum in luteal phase c) FSH levels are highest during ovulation d) Endometrium is shed during menstrual phase Q4. If a secondary oocyte is fertilized, the resulting zygote will have a) 23 chromosomes b) 46 chrom...

NEET Biology - Sexual Reproduction in Flowering Plants 🌸 Sexual Reproduction in Flowering Plants - 50 NEET MCQs Q1. The outermost layer of microsporangium is a) Tapetum b) Epidermis c) Middle layer d) Endothecium Q2. Pollen grains are rich in a) Sporopollenin b) Cellulose c) Pectin d) Lignin Q3. Which is the male gametophyte in angiosperms? a) Microspore b) Pollen grain c) Pollen tube d) Generative cell Q4. The embryo sac of angiosperms is a) 8-nucleate, 7-celled b) 7-nucleate, 8-celled c) 4-nucleate, 4-celled d) 8-nucleate, 8-celled Q5. Double fertilization was discovered by a) Strasburger b) Nawaschin c) Hofmeister d) Maheshwari Q6. What is the ploidy of endosperm? a) n b) 2n c) 3n d) 4n Q7. The outermost whorl of flower is a) Corolla b) Calyx c) Androecium d) Gynoecium Q8. Tapetum provides nutrition to a) Megaspore b) Microspore c) Embryo d) Endosperm Q9. Cl...

📥 NEET Biology Chapter 3 PDF Is PDF me kya hai: Reproductive Health - WHO Definition & RCH Programme Population Explosion - Reasons, Govt Strategies & Birth Control Contraceptive Methods - Natural, Barrier, IUDs, Pills, Surgical MTP Act - Legal up to 20 weeks, Reasons & PNDT Act STDs - Bacterial vs Viral, Symptoms & Prevention Infertility & ART - IVF, ZIFT, IUI, ICSI, Surrogacy + 20+ NEET MCQs Download PDF Now ⬇️ Download more free NEET PDF: neetbiologynotes.in FAQ - Reproductive Health Q1: What is Reproductive Health according to WHO? WHO defines Reproductive Health as a total well-being in all aspects of reproduction, i.e., physical, emotional, behavioral and social.

📥 NEET Biology Chapter 2 PDF Is PDF me kya hai: Male & Female Reproductive System Gametogenesis - Spermatogenesis & Oogenesis Menstrual Cycle - 4 Phases Fertilization, Implantation & Pregnancy Parturition & Lactation 20+ Important NEET Q&A + Diagrams Download PDF Now ⬇️ Download more free NEET PDF: neetbiologynotes.in

Hello friend 👋 NEET Biology Chapter 22: Chemical Coordination and Integration Free Detailed Notes 📚 Pituitary + Thyroid + Adrenal + Pancreas + Hormones PDF + Diagrams + MCQs Want it? DM me ❤️  ### *1. Endocrine System* *Endocrine Glands*: Ductless glands. Secrete *hormones* directly into blood   *Exocrine Glands*: Have ducts. Ex: Salivary, Sweat, Digestive glands   *Mixed Glands*: Both endocrine + exocrine. Ex: Pancreas, Gonads *Hormones*: Chemical messengers. Produced in trace amounts. Regulate metabolism ### *2. Human Endocrine System - Major Glands* #### *A. Pituitary Gland / Hypophysis* *Location*: Below hypothalamus. Attached by stalk   *Divided into 3 parts:* *1. Anterior Pituitary / Adenohypophysis* - *Growth Hormone GH / Somatotropin*: Growth of bones & tissues. Excess → Gigantism. Deficiency → Dwarfism - *Prolactin PRL*: Milk synthesis in mammary glands - *TSH*: Stimulates thyroid gland - *ACTH*: Stimulates adrenal cortex - *Gonadotropin...

📥 NEET Biology Chapter 1 PDF Is PDF me kya hai: 1. Flower - Sexual Reproductive Organ 2. Microsporogenesis - Formation of Pollen Grains 3. Megasporogenesis - Embryo Sac Formation 4. Double Fertilization 5. Post Fertilization - Seed, Fruit, Apomixis 6. 5 Important NEET PYQ Download PDF Now ⬇️ Download more free NEET PDF: neetbiologynotes.in

Hello friend 👋 NEET Biology Chapter 21: Neural Control and Coordination Free Detailed Notes 📚 Brain + Neuron + Reflex + Disorders PDF + MCQs ### *Chapter 21: Neural Control and Coordination* ### *1. Neural System in Humans* *Functions*: Point-to-point coordination, Fast, Voluntary + Involuntary actions *2 Parts:* 1. *Central Neural System CNS*: Brain + Spinal Cord 2. *Peripheral Neural System PNS*: All nerves of body *PNS is further divided:* - *Somatic Neural System SNS*: Voluntary. Transmits impulses from CNS to skeletal muscles - *Autonomic Neural System ANS*: Involuntary. Controls visceral organs       - *Sympathetic*: Fight & Flight      - *Parasympathetic*: Rest & Digest - *Visceral Neural System*: Part of ANS. Inner organs ### *2. Neuron - Structural & Functional Unit of Neural System* *Parts of Neuron:* 1. *Cell body / Cyton*: Contains nucleus, Nissl's granules. Protein synthesis 2. *Dendrites*: Short branches. Receive impulses 3....

Hello friend 👋 Free NEET Notes for Chapter 20: Locomotion and Movement 🔥 ✅ 3 Types of Muscles ✅ Sliding Filament Theory  ✅ 206 Bones + Types of Joints ✅ NEET High Yield Points + Disorders Share with your NEET friends ❤️ ### *1. Types of Movement in Animals* 1. *Amoeboid Movement*: By pseudopodia. Ex: Amoeba, Macrophages, WBCs. Uses actin microfilaments 2. *Ciliary Movement*: By cilia. Ex: Paramecium, lining of trachea, oviduct 3. *Flagellar Movement*: By flagella. Ex: Sperm, Euglena, Chlamydomonas 4. *Muscular Movement*: By skeletal muscles. Most advanced. Helps in locomotion ### *2. Human Muscular System - 3 Types* Feature Skeletal Muscle Smooth Muscle Cardiac Muscle **Location** Attached to bones Hollow organs, blood vessels Heart wall only **Control** Voluntary Involuntary Involuntary **Striations** Present Absent Present **Shape** Cylindrical, unbranched Spindle shaped Branched **Nuclei** Multinucleated, peripheral Uninucleated, central Uninucleated, central **Intercalated di...

*Hello Friends 👋 Today we will study Chapter 19 of Class 11 NCERT Biology: *Excretory Products and their Elimination* These notes are specially made for NEET aspirants. You’ll get detailed + short notes here. Read till the end and don’t forget to save these notes for revision 📚 Let’s get started... Chapter 19: Excretory Products and their Elimination - Class 11 NCERT*   _Detailed Short Notes for NEET - Expanded Version_ ### *1. EXCRETION* *Definition*: Removal of nitrogenous wastes and other toxic metabolic by-products from the body. *Why needed?*  To maintain *homeostasis* - constant internal environment for proper functioning of enzymes and cells. *Mode of excretion depends on*: Habitat, water availability, and evolutionary adaptation. --- ### *2. EXCRETORY PRODUCTS* Based on main nitrogenous waste Product Example Animals Toxicity Water Needed Solubility **Ammonia** Aquatic animals, bony fishes, tadpole Most toxic Very high Highly soluble **Urea** Mammals, amphibians,...