CBSE 2026 · Region 5 · Set 2 · Q17 · 2 marks
Draw a labelled diagram of the embryonic stage that gets implanted in the human uterus. State the functions of two labelled parts.
Marking-scheme solution
(i)
Gets attached to the endometrium/Implantation/placenta formation.
(ii)
It forms ectoderm mesoderm and endoderm/forms germ layers / form embryo.
Human ReproductionPregnancy and Embryonic DevelopmentApplyvery_short_answermedium
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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.