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Science · 2023 · 2 marks
CBSE 2023 · Region 2 · Set 2 · Q26
(a) What is meant by trophic level? (b) On an average, what percentage of energy is transferred to the second trophic level from the first trophic…
(a)
What is meant by trophic level ?
(b)
On an average, what percentage of energy is transferred to the second trophic level from the first trophic level ? Which categories of consumers do the organisms of the second trophic level belong to ?
Marking-scheme solution
(a)
Each step or level of the food chain forms a trophic level.
(b)
•$\displaystyle 10$%
Primary consumers/Herbivores
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CBSE Class 10 Science past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.