Class 9 Biology

CBSE Class 9 Biology — syllabus, chapter notes, NCERT solutions, formulas, important questions, MCQs, sample papers and previous year papers.

Free notes & chapter tests

How this chapter is taught

Overview

Core concepts

Formula / reaction sheet

NCERT connections

Important questions

Previous year questions

MCQ practice

Common mistakes

Quick revision

Chapter test

FAQs

Related chapters

Recommended next: tests, PYQs, notes & courses

Hand-picked from everything Prepkunj already publishes for Class 9 Biology — free resources first, guided programs last.

Free tests to attempt next

Practise this topic immediately — every test is graded instantly with solutions.

Cell Cycle and Cell Division — 30-question testGraded Biology chapter test with instant scoring, solutions and weak-topic feedback.Free • 30 questions Chemical Kinetics — 30-question testGraded Chemistry chapter test with instant scoring, solutions and weak-topic feedback.Free • 30 questions Chemical Reactions and Equations — 30-question testGraded Science chapter test with instant scoring, solutions and weak-topic feedback.Free • 30 questions Sequences and Series — 30-question testGraded Mathematics chapter test with instant scoring, solutions and weak-topic feedback.Free • 30 questions Build a custom practice setFilter the question bank by exam, subject, chapter, topic and difficulty, then practise a set built for this topic.Question bank

Previous year questions

PYQs show exactly how this topic is asked — start with the most recent papers.

All previous year papersYear-wise question papers and answer keys for NEET, JEE, BITSAT, IISER IAT and the SAT.PYQ library

Notes and study material

Read the concept first, then attempt the test — notes are written for exam recall.

Classification of Elements and Periodicity notesChemistry revision notes — concepts, formula sheet, must-know points and common mistakes.Chapter notes The Living World and Biological Classification notesBiology revision notes — concepts, formula sheet, must-know points and common mistakes.Chapter notes Acids, Bases and Salts notesScience revision notes — concepts, formula sheet, must-know points and common mistakes.Chapter notes Alcohols, Phenols and Ethers notesChemistry revision notes — concepts, formula sheet, must-know points and common mistakes.Chapter notes CBSE (Class 8-12) exam informationPattern, syllabus, marking scheme, important dates and cutoff trends in one place.Exam info

Guided courses for this topic

Want a mentor to drive the plan? These programs cover this topic with live teaching and tests.

CBSE Online Tuition (Class 8–12, Science & Maths)Board-focused live Science & Maths tuition3 formats CBSE Class 8 – 10 (Science & Maths)1 Year • Live Online₹50,000 CBSE Class 11 (Science — PCM / PCB)1 Year • Live Online₹70,000 1-on-1 Premium classesFully personalised live mentoring at $15/hour with a plan built around your weak topics.$15 / hour Book a free demo classSit in a live class, meet the faculty and get a study plan — no payment needed.Free

Resources in this hub

Detailed guides for Class 9 Biology are being written and academically reviewed by the Prepkunj faculty panel. Meanwhile, use the free notes, chapter tests and previous year papers linked above — or ask a mentor for a plan built around this topic.

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