CBSE 2026 · Region 2 · Set 1 · Q24 · 3 marks
Draw a neat diagram of enlarged view of one microsporangium of a Young anther of an angiosperm. Label the different layers of the wall and write the functions of the outermost and innermost layer.
Marking-scheme solution
(Half marks for each correct labelling)
Outermost layer: Epidermis helps in protection / in dehiscence of anther to release the pollens.
Innermost layer: Tapetum provides nourishment to the developing pollen grainsSexual Reproduction in Flowering PlantsPre-fertilisation: Structures and EventsApplyshort_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.