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Assertion : Megaspore mother cell underg...

Assertion : Megaspore mother cell undergoes meiotic division
Reason : All four megaspores form female gametophyte.

A

If both the assertion and the reason are true and the reason is a correct explanation of the assertion

B

If both the assertion and reason are true but the reason is not a correct explanation of the assertion

C

If the assertion is true but the reason is false

D

If both the assertion and reason are false

Text Solution

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The correct Answer is:
C

On hypodermal nucellar cell of the micropylar region differentiates into the sporogenous cell. It forms a diploid megaspore mother cell or megasporocyte. The megaspore mothe cell or megasporocyte. The megaspore mother cell or megasporocyte. The megaspore mother cells undergo meiosis and forms a row of four haploid megaspores. Only the chalazal megaspore remains functional megaspore enlarges and gives rise to female gametophyte, also called embryo sac.
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Megaspore mother cell originates from :

Give below are assertion and reason. Point out if both are true and reason is correct explanation (A), both true but reason is not correct explanation (B), assertion is true but reason is wrong (C), both are wrong (D). Assertion. Megaspore mother cell undergoes meiosis to produce four megaspores. Reason. Megaspore mother cells and megaspores both are haploid

Assertion : The megaspore mother cell undergoes mitosis to produce four megaspore. Reason : Megaspore mother cells and the megaspore are both haploid.

During megasporogenesis, potential megaspore mother cell undergoes following cell divisions to form gametophyte female

Assertion : The megaspore mother cell divides mitotically to produce four spores Reason : Megaspore mother cells are diploid and megaspore is haploid.

Meiosis of megaspore mother cell generally produces

Megaspore on germination produces female gametophyte.

How many pollen mother cells should undergo meiotic division to produce 64 pollen grains?

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