Class 12BiologySexual Reproduction in Flowering PlantsThe Pistil, Megasporangium (ovule) and Embryo sac
MediumHow many megaspores are produced by the megasporangium of a gymnosperm?
- AFour
- BThree
- CTwo
- DOne
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$A$ typical angiosperm embryo sac,at maturity,though $8$-nucleate is . . . . . . .
How many polar nuclei migrate to the centre of the developing female gametophyte from each pole of the female gametophyte?
Assertion: The megaspore mother cell divides mitotically to produce four spores.
Reason: Megaspore mother cells are diploid and megaspore is haploid.
Reason: Megaspore mother cells are diploid and megaspore is haploid.
MediumAIIMS 2002
View SolutionWhat is the protective covering of the ovule called?
Medium
View SolutionStalk of an anatropous angiosperm ovule is called . . . . . . .
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