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Assertion : In a microsporangium, the tapetal cells possess tittle cytoplasm and generally have a single prominent nucleus. Reason : During microsporogenesis, the microspore mother cells (M M Cs) undergo mitotic divisions to produce hapliod microspore tetrads.A. If both assertion and reason are true and reason is the correct explanation of assertionB. If both assertion and reason are true but reason is not the correct explanation of assertionC. If assertion is true but reason is falseD. If both assertion and reason are false |
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Answer» Correct Answer - d Tapetum is the innermost wall layer of a microsporangium. It nourishes the developing pollen grains. The tapetal cells enlarge radically and become filled with dense protoplasmic contents as well as nutrients. Tapetal cells are generally multinucleate or their nucleus become polyploid due to endoplodiy. Microsporogenesis refers to the process of formation of haploid microspores mother cell (M MC) or pollen mother cell (PMC) through meiosis (and not mitosis). |
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