CBSE 2026 · Region 4 · Set 1 · Q9 · 1 mark
The given diagram shows the skulls of two different mammals.
Which of the following options accurately describes the differences between these skulls ?(A)Skull B is the ancestor of skull A.(B)Skull A has more brain capacity than skull B.(C)Skull A is of a human and skull B is of an adult chimpanzee.(D)Skull A is of an adult chimpanzee and skull B is of a human.
The given diagram shows the skulls of two different mammals.
Which of the following options accurately describes the differences between these skulls ?
(A)
Skull B is the ancestor of skull A.
(B)
Skull A has more brain capacity than skull B.
(C)
Skull A is of a human and skull B is of an adult chimpanzee.
(D)
Skull A is of an adult chimpanzee and skull B is of a human.
Official answer
From CBSE’s own marking scheme for this paper.
(D)
Skull A is of an adult chimpanzee and skull B is of a human.
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CBSE Class 12 Biology past-paper question from the 2026board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.