Assertion (A): Food web is a network of several food chains operating in an ecosystem.

Reason (R): Food web decreases the stability of an ecosystem.

Our Environment

Ecosystem

Options

(A)Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).

(B)Both Assertion (A) and Reason (R) are true and Reason (R) is not the correct explanation of the Assertion (A).

(C)Assertion (A) is true, but Reason (R) is false.

(D)Assertion (A) is false, but Reason (R) is true.

Official Answer

Food web is a network of several food chains operating in an ecosystem.

food webecosystemstability

Marking Scheme

11 mark

Hint

Recall the concept of food web and its relation to ecosystem stability.

Quick Oral Answer

A food web is a network of several food chains operating in an ecosystem, which actually increases the stability of an ecosystem.

Analysis & Explanation

The assertion is correct as a food web is a network of several food chains operating in an ecosystem. However, the reason is incorrect as a food web actually increases the stability of an ecosystem by providing more pathways for energy flow and making the ecosystem more resilient to changes.

Common Mistakes

1thinking that food web decreases ecosystem stability

Interesting Facts

food webs can be complex and have many interacting components

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Frequently Asked Questions

How many marks does this question carry in CBSE Class 10 Science 2025?

This question carries 1 mark in the CBSE Class 10 Science 2025 examination.

Which chapter does this question come from in Science?

This question is from the chapter "Our Environment" in the CBSE Class 10 Science syllabus.

What topic does this question cover in Science?

This question covers the topic "Ecosystem" from CBSE Class 10 Science.

What type of question is this in the CBSE Class 10 Science 2025 paper?

This is a MCQ question from Section A in the CBSE Class 10 Science 2025 paper.