CBSE 2024 · Region 4 · Set 1 · Q22 · 3 marks
Draw a well labelled diagram of sectional view of male gametophyte/microspore of an angiosperm and write the functions of any two parts labelled. (Any four labels).
Marking-scheme solution
[Vegetative cell, generative cell, exine, intine, germ pore ]Vegetative cell- contain abundant food reserve for pollen germination
Generative cell- Divide to produce male gametes
Exine – Protective layer
Intine- Involved in the formation of pollen tube.
Germ pore- Pollen tube emerges from this point.Sexual Reproduction in Flowering PlantsPre-fertilisation: Structures and EventsApplyshort_answermedium
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CBSE Class 12 Biology past-paper question from the 2024board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.