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CBSE Class 12

Exam & practice collection

CBSE Class 12 Biology Important Questions

Most important exam-oriented questions for Class 12 Biology — chapter-wise PDF sets.

16 PDFs 16 chapters

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Choose a Biology chapter to find practice PDFs.

Biodiversity and Conservation 1 resource Biotechnology and its Applications 1 resource Biotechnology Principles and Processes 1 resource Ecosystem 1 resource Environmental Issues 1 resource Evolution 1 resource Human Health and Diseases 1 resource Human Reproduction 1 resource Microbes in Human Welfare 1 resource Molecular Basis of Inheritance 1 resource Organisms and Populations 1 resource Principles of Inheritance and Variation 1 resource Reproduction in Organisms 1 resource Reproductive Health 1 resource Sexual Reproduction in Flowering Plants 1 resource Strategies for Enhancement in Food Production 1 resource

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Frequently asked questions

How many Class 12 Biology Important Questions PDFs are available on Ribblu?

This collection currently lists 16 approved Important Questions resources for CBSE Class 12 Biology, updated as new papers are uploaded.

Are these Important Questions papers free to download?

You can browse resources on Ribblu for free. Guests get 1 free PDF download every 30 days (any one paper). After that, create a free Ribblu account (you get 200 points on signup); further downloads use 25 Ribblu points each (earn points by uploading papers or writing school reviews). Re-downloading a paper you already own on your account is free.

Which Biology chapters have Important Questions practice?

Popular chapters with Important Questions content include Biodiversity and Conservation, Biotechnology and its Applications, Biotechnology Principles and Processes. Use the chapter links on this page to open topic-specific collections.

Are these Important Questions questions aligned with CBSE Class 12 pattern?

Resources are uploaded from schools and educators across India and tagged for Important Questions practice. Check individual PDFs for marking scheme or answer keys where included.

Can teachers use these Biology Important Questions PDFs in class?

Yes. Teachers may print or share links for classroom tests, revision sessions, and homework assignments.

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