CBSE 2025 · Region 2 · Set 1 · Q21 · 2 marks
Student to attempt either option (A) or (B).Identify the type of pyramid given below and write two identifying features of such a pyramid :
(B)Construct an ideal pyramid of energy when $\displaystyle 10,00,000$ Joules of sunlight is available.(ii)Mention the energy obtained by the fourth level of this pyramid.
Student to attempt either option (A) or (B).
Identify the type of pyramid given below and write two identifying features of such a pyramid :
(B)
Construct an ideal pyramid of energy when $\displaystyle 10,00,000$ Joules of sunlight is available.
(ii)
Mention the energy obtained by the fourth level of this pyramid.
Marking-scheme solution
Expanding age pyramid.
The number of individuals in the pre-productive age group is more than that in the reproductive age group,
Number of Post reproductive individuals are less than reproductive individuals.
(B)
(ii)
10J
EcosystemEcological PyramidsApplyvery_short_answermedium
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CBSE Class 12 Biology past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.