In angiosperms,all 4 microspores of a tetrad | vedclass

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Question

(A) During microsporogenesis,the microspore mother cell undergoes meiosis to form a group of $4$ haploid cells known as a microspore tetrad.These $4$

Vedclass · Accepted Answer

Callose

Vedclass · Answer

(A) During microsporogenesis,the microspore mother cell undergoes meiosis to form a group of $4$ haploid cells known as a microspore tetrad.These $4$ microspores are held together by a special layer of callose.As the anther matures and dehydrates,the enzyme callase (secreted by the tapetum) breaks down this callose layer,allowing the microspores to dissociate and develop into pollen grains.

In angiosperms,all $4$ microspores of a tetrad are covered by a layer which is formed by:

Similar Questions

Assertion $A$: Pollen grains are found in the form of fossils.
Reason $R$: Sporopollenin is seen in its outer layer.

Which of the following is surrounded by a callose wall?

Identify the structures marked $A$ to $F$ in the given diagram.

Which element is required for the germination of pollen grains?

Pollen grains are released from

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