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Biology · 2023 · 2 marks
Sexual Reproduction in Flowering PlantsPre-fertilisation: Structures and Events2 marksUnderstandvery short answer
CBSE 2023 · Region 3 · Set 1 · Q17
(a) Explain the process of the development of a male gametophyte in an angiosperm. (b) Why is it called a male gametophyte?
(a)
Explain the process of the development of a male gametophyte in an angiosperm.
(b)
Why is it called a male gametophyte ?
Marking-scheme solution
(a)
Cells of sporogenous tissue/Microspore mother cell/ Pollen mother cell (PMC) in anther undergoes meiotic division, to form microspore tetrad which mature and dissociate to form pollen grains or male gametophyte. (b) Because its generative cell divides, to form two male gametes.
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CBSE Class 12 Biology past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.