Class 12 · Botany

Ecosystem

10 topics — from Introduction through Community dynamics. Expect about 3 questions in NEET — roughly 12 of 720 marks.

Updated 25 Aug 2026 10 topics Botany · Class 12
In short

Ecosystem is a Class 12 Botany chapter covering 10 topics. Expect about 3 questions in NEET — roughly 12 of 720 marks.

10
Topics
In this chapter
3
Expected questions
≈ 12 of 720 marks
12
Class
Botany
97
Chapters in the syllabus
22 in Botany

Topics covered #

10 topics, in teaching order.

  1. Introduction
  2. Components and types of ecosystem
  3. Ecosystem productivity
  4. Ecological efficiencies
  5. Energy flow
  6. Ecological pyramids
  7. Decomposition
  8. Mineral cycling and ecosystem services
  9. Community character
  10. Community dynamics

Weightage #

Expect about 3 questions in NEET — roughly 12 of 720 marks.

3 of 180 questions · 12 of 720 marks
This chapter's share of the paper. Weightage is indicative — it reflects how many questions have typically come from here, not a guarantee for any single year.

Practise this chapter #

Reading it once is not the same as being able to answer it under time.

Practice questionsChapter-wise MCQs with solutions Video lecturesTopic-by-topic walkthroughs Chapter testExam-format, timed NEET previous-year questionsPast questions from this chapter AIIMS previous-year questionsOlder AIIMS papers, same syllabus

Next in Botany

← PreviousOrganisms and Populations

Frequently asked #

How many questions come from Ecosystem in NEET?
About 3 questions — roughly 12 of the 720 marks available. It is a Class 12 Botany chapter.
What topics does this chapter cover?
10 topics — from Introduction through Community dynamics. The full list is above.
Where can I practise Ecosystem?
Chapter-wise MCQs, video lectures, a timed chapter test, and both NEET and AIIMS previous-year questions — all linked above.