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In angiosperms, the functional megaspore...

In angiosperms, the functional megaspore in the linear tetrad is generally

A

Micropylar

B

Second from micropylar

C

Third from micropylar

D

Fourth from micropylar

Text Solution

Verified by Experts

The correct Answer is:
D
In angiosperms, the functional megaspore in the linear tetrad is generally fourth from micropylar.
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In angiosperms, microsporogenesis and megasporogenesis

Read the following statements and find out the incorrect statements. a. Ovules generally differentiate a single megaspore mother cell (MMC) in the chalazal region of the nucellus. b. The MMC undergoes reduction division and produces four megaspores. c. In a majority of angiosperms, one of the megaspore is degenerated while the other three remains functional. d. The nucleus of the functional megaspore divides mitotically three times and form 2-nucleate, 4-nucleate and later 8-nucleate stages of the embryo sac. e. These mitotic division are strictly free nuclear, that is, nuclear division are immediately followed by cell wall formation.

Assertion: In majority of angiosperms, there is monosporic type of embryo sac development. Reason: The embryo sac develops from the single functional megaspore.