Food chains and food webs

This type of question, asked 4 times: 2023, 2024, 2025, 2026. All 7 questions below, oldest first.

Try each one first, then open its answer.

Question 1
2023
10 $Study the given figure of a Food web and identify the primary consumer in the food web:$
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Question 2
2024
33 $Differentiate between food chain and food web. In a food chain consisting of deer, grass and tiger, if the population of deer decreases, what will happen to the population of organisms belonging to the first and third trophic levels ?$
Question 3
2024
33 (A) $\rightarrow$
Question 4
2024
15 $Identify the food chain in which the organisms of the second trophic level are missing :$
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Question 5
2025
15 $Which of the following groups do not constitute a food chain ? (i) Wolf, rabbit, grass, lion (ii) Plankton, man, grasshopper, fish (iii) Hawk, grass, snake, grasshopper, frog (iv) Grass, snake, wolf, tiger$
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Question 6
2025
Two statements are given, one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer from the options given below.
20 $Assertion (A) : Food web is a network of several food chains operating in an ecosystem. Reason (R) : Food web decreases the stability of an ecosystem.$
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Question 7
2026
5 $Organisms of a higher trophic level which feed on several types of organisms belonging to a lower trophic level form the :$
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Question 1