CBSE Class 12 Biology: chapters, practice and AI help
Class 12 Biology is the backbone of NEET preparation. Reproduction, Genetics and Molecular Basis of Inheritance, Evolution, Human Health, Biotechnology and Ecology are asked with diagrams, flowcharts and case-based questions. LerkAI draws labelled figures like the embryo sac and DNA replication fork, and turns every chapter into NCERT-line revision notes for CBSE and ISC. This page covers the full Class 12 Biology syllabus for CBSE and ISC, with 16 CBSE chapters and 9 ISC chapters listed below. Open any chapter for a summary and key concepts, try the sample questions to check where you stand, then ask LerkAI's tutor for help on anything that still feels unclear before your board exam.
Chapters
- Reproduction in Organisms
- Sexual Reproduction in Flowering Plants
- Human Reproduction
- Reproductive Health
- Principles of Inheritance and Variation
- Molecular Basis of Inheritance
- Evolution
- Human Health and Disease
- Strategies for Enhancement in Food Production
- Microbes in Human Welfare
- Biotechnology: Principles and Processes
- Biotechnology and its Applications
- Organisms and Populations
- Ecosystem
- Biodiversity and Conservation
- Environmental Issues
Frequently asked questions
Does LerkAI follow the CBSE and ISC Class 12 Biology syllabus?
Yes. Every chapter on this page follows the current CBSE and ISC Class 12 Biology syllabus, and the tutor answers in NCERT and board terminology.
Is NCERT enough for Class 12 Biology?
For CBSE boards, NCERT line by line is enough. For NEET, NCERT is the base and most questions come directly from its text and diagrams.
Can I practise Class 12 Biology tests on LerkAI?
Yes. You can create chapter-wise practice tests and full board-style papers with marks, figures and a marking scheme, then download them as a PDF.
Can I study in Hindi or Hinglish?
Yes. Switch the language to Hindi and LerkAI explains concepts in simple Hinglish while keeping key terms in English.