Biology is a key part of General Science in almost every competitive exam like UPSC, SSC, Railways, and State PSCs. To help you master this subject, we’ve created easy-to-understand, exam-focused biology notes covering all important topics.
These notes are perfect for quick revision and smart preparation, from cells and tissues to human systems and plant life. Whether you’re a beginner or revising for the last time, this guide will boost your confidence and scores. Let’s explore the world of living things in the simplest way possible—tailored just for competitive exam aspirants!
This blog post covers links to all essential biology topics in a simple and easy-to-understand way.
NCERT Class VI
Chapter 2: Components of Food [3]
✅ What are Nutrients? – Types and Functions of Nutrients
✅ Water-Soluble Vitamins: Essential Nutrients for a Healthy Body
✅ Vitamins, Source, Chemical Names, and Deficiency disease
NCERT Class VIII
Chapter 10: Sound [1]
✅ Anatomy of the Human Ear: Detailed Overview
NCERT Class X
Chapter 5: Life Processes [2]
✅ Modes of Nutrition in Living Organisms with Chart and Tables
✅ Autotrophic Nutrition: The Self-Sustaining Mode of Nutrition
NCERT Class XI
Chapter 1: The Living World [1]
✅ Diversity in the Living World: Class 11 NCERT Notes
Chapter 2: Biological Classification [1]
✅ Economic Importance of Fungi
Chapter 3: Plant Kingdom [5]
🔺 Rhodophyceae – The Red Algae: Based on NCERT
🔺 Phaeophyceae (Brown Algae) – A Complete Guide
🔺Chlorophyceae (Green Algae) – A Complete Guide
🔺 Algae Classification Notes: A Simple Guide for Competitive Exams
🔺 Understanding Angiosperms: The Flowering Plants
Chapter 4: Animal Kingdom [1]
🔺Phylum – Arthropoda: NCERT Notes
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Chapter 5: Morphology of Flowering Plants [5]
✅ Types of fruits and their edible parts
✅ Inflorescence: Understanding the Arrangement of Flowers
✅ Phyllotaxy: Arrangement of Leaves on a Stem or Branch
✅ Exploring the Marvels of Plant Anatomy: Understanding the Roles of Different Plant Parts
✅ Download Modification of Stem PDF: General Science Notes
Chapter 6: Anatomy of Flowering Plants [3]
✅ Overview of the Parts of a Flowering Plant: A Quick Guide
✅ Guard Cells: The Tiny Gatekeepers of Plants
✅ Cuticle: A Protective Layer
Chapter 8: Cell: The Unit of Life [14]
✅ Cells: The Unit of Life Complete Overview
✅ Eukaryotic Cells: Structure, Characteristics, Diagram, Example
✅ Prokaryotic Cells: Discovery, Structure, Functions, and Features
✅ Structure and Function of Nucleus: Biology Notes for Competitive Exam
✅ Cell Theory: The Foundation of Life
✅ Cell Organelles and Biomolecules: Complete Overview (NCERT)
✅ Structure, Components, and Functions of Cell: A Complete Overview
✅ What is a Cell?
✅ Cell Membrane: The Gatekeeper of the Cell
✅ Cell Wall: Structure, Function, and Importance
✅ Endoplasmic Reticulum: The Cell’s Transport System
✅ Vacuoles: Structure, Functions, and Importance
✅ Mitochondria: The Powerhouse of the Cell
Chapter 9: Biomolecules [2]
✅ 9 Essential Amino Acids With Types, Description, and Facts
✅ Types of Carbohydrates with Examples and Important Facts: Complete Notes
Chapter 10: Cell Cycle and Cell Division [7]
✅ What is Cytokinesis? Simple Explanation
✅ Telophase in Mitosis & Meiosis: Key Processes Explained Simply!
✅ M Phase – The Most Exciting Part of the Cell Cycle!
✅ Chromosome – The Instruction Book of Life
✅ Anaphase – A Key Stage of Cell Division (Mitosis & Meiosis)
✅ Prophase – The First Step of Mitosis
✅ Metaphase: Complete Summary
Chapter 11: Photosynthesis in Higher Plants [10]
✅ Photosynthesis: Complete Overview Notes
✅ Calvin Cycle Explained: Steps and Importance in Photosynthesis
✅ Process of Photosynthesis: Light and Dark Reaction
✅ Steps Involved in Light Reaction of Photosynthesis With Short Questions
✅ Photosynthesis Formula Equation with Lots of Key Facts
✅ What is Photosynthesis in Biology Short Answer with Explanation
✅ Understanding C3 Plants: A Comprehensive Guide
✅ Ribulose Bisphosphate (RuBP) – An In-Depth Study
✅ Understanding Stomata: Types, Diagram, Function
✅ Types of Pigment in Plants with Examples: Complete Details
Chapter 12: Plant Growth and Development [5]
NCERT 2021-22 Edition
✅ List of Essential Nutrients in Plants: Functional Classification
✅ Essential Nutrients for Plant Growth From Water and Soil
✅ Macronutrients in Plants and Their Functions
✅ Micronutrients for Plant Growth Key Details
✅ Role of Macro – and Micro-nutrients for Plants– NCERT Notes
Chapter 13: Plant Growth and Development [4]
✅ Discovery of Plant Growth Regulators: NCERT Explained
✅ Plant Hormones And Their Functions: Detailed Point-wise Notes
✅ Auxins: The Growth Hormones of Plants
✅ Cytokinins – The Cell Division Hormones in Plants
Chapter 14: Breathing and Exchange of Gases [2]
✅ Anatomy of the Human Respiratory System
✅ Anatomy of Human Respiratory System: In-Depth Notes
Chapter 15: Body Fluids and Circulation [8]
✅ Natural Killer Cells Role and Importance
✅ White Blood Cells Explained: Types, Functions, and Their Role in Health
✅ Formed Elements in Blood: Explained for Competitive Exams
✅ Haemoglobin: The Oxygen Carrier of Blood
✅ Blood Coagulation – Explained Simply for Competitive Exams
✅ Sickle Cell Anemia – Complete Notes
✅ Cholesterol: The Good, The Bad, and Everything You Need to Know
Chapter 16: Digestion and Absorption [10]
✅ Decoding the Human Digestive System: Notes, Diagrams, and Key Points Revealed
✅ Layers of the Alimentary Canal: NCERT Notes
✅ Parts of the Alimentary Canal, Diagram, Anatomy, and Key Info
✅ Salivary Glands: Types and Function
✅ 6 Facts Everyone Should Know About The Liver
✅ Liver: Anatomy, Functions, and Liver Disease Biology Notes
✅ What is the Function of Bile Juice Secreted by the Liver
✅ Large Intestine Overview: Parts, Function, Diagram & More
✅ Small Intestine Overview: Location, Functions, Parts, and Key Points
✅ Pancreas: Location, Diseases, Function, Key Points
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Chapter 17: Locomotion and Movement [8]
✅ Human Skeletal System: Diagram, Parts, Functions, Bones & More
✅ Types of Joints in the Human Body with Examples
✅ Types of Movement in Humans: NCERT Notes
✅ Human Arm Skeleton: Key Bones and Functions
✅ Major Bones of the Lower Limb: Based on NCERT
✅ Human Vertebral Column – Explained Simply
✅ Cartilage: What It Is, Function & Types
✅ Anatomy of the Human Skull: Detailed Overview
Chapter 18: Neural Control and Coordination [2]
✅ The Neural System: An Overview
✅ Human Nervous System Definition, Function, Diagnostic Tests & Key Facts
Chapter 19: Chemical Coordination and Integration [7]
✅ What are Hormones? Types, Functions, Important Hormones
✅ What is Acromegaly, and What is the Cause of this Disease?
✅ Adrenal Glands: Function, Hormones, Diagram, and Key Points
✅ What are the Functions of the Pituitary Gland?
✅ Thymus Gland: The Powerhouse of Immunity
✅ Functions of Ovarian Hormones: Key Roles in Female Health
✅ Goiter – Causes, Types, Symptoms & Exam Facts | SSC, UPSC, RRB Notes
NCERT Class XII
Chapter 2: Human Reproduction [1]
✅ The Male Reproductive System: A Simple Guide
Chapter 5: Molecular Basis of Inheritance [3]
✅ Nucleotides: The Building Blocks of Life
✅ Single Strand vs Double Strand: Understanding the Basics
✅ RNA: Structure, Types, Functions and More
Chapter 7: Human Health and Disease [2]
✅ Human Immune System: Immunity, Lymphocytes, Antibody with Diagrams
✅ Disease caused by metals with Previous Year Question
Chapter 12: Ecosystem [1]
🔺Ecosystem: Complete Overview (NCERT)
Conclusion: Keep Exploring Biology!
Biology is an exciting subject that helps us understand the world around us. Whether you’re preparing for SSC, RRB NTPC, UPSC, or state-level exams, having a strong grip on General Science can boost your score significantly!
🔹 Keep revising these notes regularly 🔹 Use diagrams and flowcharts for better understanding 🔹 Stay curious and keep exploring nature!
💡 Remember: Science is all about asking questions. Keep learning and enjoy the journey of discovering life! 🚀
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