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Microsporogenesis

In angiosperm...

Question

In angiosperm, all 4 microspores of tetrad are covered by a layer which is formed by

A

Callose

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B

Cellulose

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C

Sporopollenin

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D

Pectocellulose

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Solution

The correct option is A Callose
Callose wall surrounds the sporocytes during the meiotic stage. It provides an isolation barrier sealing off one meiotic cell (megaspore mother cell) from another. Hence it acts as a molecular filter isolating the developing microspores from the influence of the surrounding diploid tissue or sister spores. Thus the correct answer is option A.

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