Assertion :In a microsporangium, the tapetal cells, possess little cytoplasm and generally have a single prominent nucleus. Reason: During microsporangenesis, the microspore mother cells(MMCs) undergo mitotic divisions to produce haploid microspore tetrads.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is D Both Assertion and Reason are incorrect
Tapetum is the innermost wall layer of a microsporangium. It nourishes the developing pollen grains. The tapetal cells enlarge radially and become filled with dense protoplasmic contents as well as nutrients. Tapetal cells are generally multinucleate or their nucleus becomes polyploid due to endoploidy. Microsporogenesis refers to the process of formation of haploid microspores (or pollen grains) from a microspore mother cell(MMC) or pollen mother cell (PMC) through meiosis (and not mitosis).
So, the correct answer is 'Both Assertion and Reason are incorrect'.

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