NEET Botany — MCQ Practice Questions & Answers

Question 1

The biodiversity of India is attributed primarily to:

Accepted Answer

Correct answer: B. Diverse climates, topography, rainfall patterns, and geological history — India's exceptional biodiversity is due to its diverse climatic zones (tropical to alpine), varied topography, monsoon patterns, and complex geological history creating multiple ecological niches.

Answer

A. Large geographical area only

Answer

C. High human population

Answer

D. Recent conservation efforts

Question 2

Which of the following phenomena is an example of positive feedback in an ecosystem?

Accepted Answer

Correct answer: B. Climate warming causing increased CO₂ release from thawing permafrost — Climate warming → permafrost thaw → CO₂ release → more warming is a positive feedback loop that amplifies the initial change, unlike negative feedback which stabilizes systems.

Answer

A. Predator controlling prey population

Answer

C. Decomposition breaking down dead organic matter

Answer

D. Plants reducing atmospheric CO₂ through photosynthesis

NEET Botany - MCQ Practice Questions