NEET Biology Notes PDF 2027 | Class 11 & 12

*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,...

Hello friend 🌸 Just wanted to say you're amazing 💛 Keep smiling and keep shining  Chapter 18: Body Fluids and Circulation - Class 11 NCERT*   _Detailed Short Notes for NEET_ ### *1. BODY FLUIDS* Body fluids are responsible for transport of nutrients, O2, CO2, waste, hormones etc. *3 main types:* 1. *Blood* - Red, circulates in blood vessels 2. *Lymph* - Colorless, circulates in lymphatic system   3. *Interstitial fluid* - Fills gap between cells --- ### *2. BLOOD* Blood is a *specialized fluid connective tissue*.   *Volume*: 5-5.5L in adult. *pH*: 7.4 #### *A. PLASMA - 55%* - *90-92% Water* - *6-8% Proteins*:      - *Albumin* → Osmotic balance     - *Globulin* → Immunity, antibodies     - *Fibrinogen* → Blood clotting - *Other*: Glucose, amino acids, lipids, hormones, vitamins, Na+, K+, Ca++, HCO3-, Cl- - *Functions*: Transport, defense, clotting, maintaining body temp #### *B. FORMED ELEMENTS - 45%* *1. Erythrocyte...

*Hello Friends 👋 Class 11 Biology Chapter 13: PHOTOSYNTHESIS IN HIGHER PLANTS 🌞 ke complete NCERT Short Notes le aaya hu. NEET 2027 walo ke liye 3-4 Questions Fix hai = 12-16 Marks Pakka 💯 Save kar lo, revision me kaam aayega ✅   ### *1. WHAT IS PHOTOSYNTHESIS* `Definition Line` Definition = Anabolic + Endergonic + Redox Process Equation: 6CO2 + 12H2O → C6H12O6 + 6H2O + 6O2 ↑ Discovery: O2 from H2O Not CO2 = Proved by Ruben, Hassid, Kamen = O18 Isotope Chlorophyll = Primary Pigment = Trap Light Energy Site = Mesophyll Cells = Chloroplast = 5-7 µm Length, 2-4 µm Width ### *2. EARLY EXPERIMENTS* `1Q Pakka` **Scientist** **Experiment** **Conclusion** **Year** **Joseph Priestley** Mint + Candle + Mouse in Bell Jar Plants Restore Air = O2 Release 1770 **Jan Ingenhousz** Hydrilla + Sunlight O2 Released Only in Light + Green Part 1779 **Julius von Sachs** Leaf + Iodine Test Glucose Made in Green Part = Starch Storage 1865 **T.W. Engelmann** Cladophora + Prism + Aerobic Bacteria Ac...