# Biodiversity and Conservation CBSE Class 12 PYQ Chapter Wise

> Biodiversity and Conservation CBSE Class 12 PYQs: all 13 questions from 50 official papers (2016–2026), by concept. Asked in 8 of 10 years.

Source: https://previousyearquestions.app/cbse-class-12/chapters/bio-biodiversity/

Explore: <a href="/cbse-class-12/chapters/">All CBSE Class 12 chapters</a> · <a href="/cbse-class-12/chapters/biology/">CBSE Class 12 Biology PYQs</a> · <a href="/cbse-class-12/">CBSE Class 12 hub</a> · <a href="/cbse-class-12/syllabus-pattern/">Syllabus & pattern</a> · <a href="/cbse-class-12/2026/">Class 12 2026</a>

## Answer first

Biodiversity and Conservation PYQs (previous year questions) for CBSE Class 12: Biodiversity and Conservation (Biology) had **13 questions** across the 50 official CBSE Class 12 papers we tagged (2016–2026), and appeared in 8 of them. Asked in 8 of 10 years. The concepts asked in the most papers: Loss of Biodiversity, Patterns of Biodiversity, Biodiversity Conservation.

## Year-wise question count

<ChapterQuestions exam="cbse-class-12" chapter="bio-biodiversity" part="trend" />

## Most-asked concepts

Sorted by the number of papers a concept appeared in.

<ChapterQuestions exam="cbse-class-12" chapter="bio-biodiversity" part="concepts" />

## How to practise Biodiversity and Conservation PYQs

1. Start with the concepts at the top of the table. They have come back the most.
2. Solve one year's Biodiversity and Conservation questions from the official PDF against the clock, then check the answer listed below.
3. Log every miss as a concept gap, a calculation slip or a misread. Each needs a different fix.
4. Once a concept is clean in two papers, move to the next. Then sit a full paper from the year pages.

## Questions by year

Each line gives the question number and paper, type, concept, our one-line summary, with a link to the official PDF.

<ChapterQuestions exam="cbse-class-12" chapter="bio-biodiversity" part="questions" />

## Other Biology chapters

- [Reproduction in Organisms PYQs](/cbse-class-12/chapters/bio-reproduction-organisms/)
- [Sexual Reproduction in Flowering Plants PYQs](/cbse-class-12/chapters/bio-plant-reproduction/)
- [Human Reproduction PYQs](/cbse-class-12/chapters/bio-human-reproduction/)
- [Reproductive Health PYQs](/cbse-class-12/chapters/bio-reproductive-health/)
- [Principles of Inheritance and Variation PYQs](/cbse-class-12/chapters/bio-inheritance/)
- [Molecular Basis of Inheritance PYQs](/cbse-class-12/chapters/bio-molecular-inheritance/)
- [Evolution PYQs](/cbse-class-12/chapters/bio-evolution/)
- [Human Health and Disease PYQs](/cbse-class-12/chapters/bio-human-health/)
- [Strategies for Enhancement in Food Production PYQs](/cbse-class-12/chapters/bio-food-production/)
- [Microbes in Human Welfare PYQs](/cbse-class-12/chapters/bio-microbes/)
- [Biotechnology: Principles and Processes PYQs](/cbse-class-12/chapters/bio-biotech-principles/)
- [Biotechnology and its Applications PYQs](/cbse-class-12/chapters/bio-biotech-applications/)
- [Organisms and Populations PYQs](/cbse-class-12/chapters/bio-organisms-populations/)
- [Ecosystem PYQs](/cbse-class-12/chapters/bio-ecosystem/)
- [Environmental Issues PYQs](/cbse-class-12/chapters/bio-environmental-issues/)

## FAQ

### How many Biodiversity and Conservation questions come in CBSE Class 12?
In the official papers we tagged: 2 in 2026, 1 in 2025, 1 in 2024, 2 in 2023, 3 in 2022, 1 in 2020, 2 in 2019 and 1 in 2018. Not asked in the other 2 years. That is 13 questions in all, about 5% of Biology.

### Which Biodiversity and Conservation topics repeat in CBSE Class 12?
Asked in the most papers: Loss of Biodiversity, Patterns of Biodiversity, Biodiversity Conservation. The concept table lists every one with its count.

### Are these official CBSE Class 12 questions?
Yes. Every question is from an official CBSE Class 12 paper hosted on our year pages. The one-line summaries are ours; open the PDF linked beside each question for the full text.