CBSE 2025 · Region 5 · Set 1 · Q18 · 1 mark
Assertion (A) : The embryo gets nutrition from the mother's blood with the help of a special tissue called placenta.
Reason (R) : Placenta is a disc which is embedded in the uterine wall.
Official answer
From CBSE’s own marking scheme for this paper.
(B)
Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
How do Organisms Reproduce?Reproduction in Human BeingsUnderstandassertion_reasoneasy
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CBSE Class 10 Science past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.