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BiologyBiodiversity and Conservation

Class 12BiologyChapter 135 marksModerate

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Levels of Biodiversity, Patterns of Biodiversity, Loss of Biodiversity and the board questions built on them — roughly 5 marks of the paper.

What this chapter covers

  1. 1Levels of Biodiversity
  2. 2Patterns of Biodiversity
  3. 3Loss of Biodiversity
  4. 4In-situ and Ex-situ Conservation

These lessons are being recorded. The written notes for this chapter are free to download now.

Learning resources

In the notes

Topics covered

  1. 01Levels of Biodiversity33:51
  2. 02Patterns of Biodiversity28:29
  3. 03Loss of Biodiversity27:09
  4. 04In-situ and Ex-situ Conservation16:52

After this chapter you can

  • Explain levels of biodiversity without reading from the book
  • Present patterns of biodiversity in the format the marking scheme rewards
  • Attempt every previous year question set on this chapter
Marks
5
PYQs
22
Video
1h 46m

Then do the work

Practice

Important questions
23
Board questions
33
Numericals & applications
11
Open practice set

Revise

  • One-shot revision, 27 minutes
  • Formula sheet for this chapter
  • Printable summary, 2 pages
Revision material

Prepare

Board appearances of Biodiversity and Conservation by year
YearAsked asMarks
2025MCQ set6
2024Long answer2
2023Short answer4
2022Case based6
2021MCQ set2
All PYQs

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Padho, Likho, Revise and Marks Laao. Chapter 13 of 13 — keep going while the format is fresh.

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