Microspore tetrad of angiosperm at time of formation, are surrounded by a callose wall. Breakdown of

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1.Sexual Reproduction in Flowering Plants

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The microspore tetrad of angiosperm at the time of formation, are surrounded by a callose wall. Breakdown of this wall is brought about by the enzyme callase synthesized by the

Tetrad cytoplasm

Ribosome of the tetrad

Spore mother cells

Cells of tapetum

Solution

(d)Tapetum, secrete callase enzyme which dissolves callose substances by which four pollens of pollen tetrad are united, hence separating microspores or pollens of a tetrad.

Standard 12

Biology

Give products of pollen grain and their uses.

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Which of the following has proved helpful in preserving pollen as fossils?

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(NEET-2018)

$A$ – Only some cells of the sporogenous tissue is capable of giving rise to microspore tetrad.

$R$- The microspores are arranged in a cluster of four cells – the microscopic tetrad.

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Which one of the following statements is wrong?

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(AIPMT-2012)

Ubisch bodies found in tapetal cell help in formation of

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The microspore tetrad of angiosperm at the time of formation, are surrounded by a callose wall. Breakdown of this wall is brought about by the enzyme callase synthesized by the

Solution

Similar Questions

Give products of pollen grain and their uses.

Which of the following has proved helpful in preserving pollen as fossils?

$A$ – Only some cells of the sporogenous tissue is capable of giving rise to microspore tetrad. $R$- The microspores are arranged in a cluster of four cells – the microscopic tetrad.

Which one of the following statements is wrong?

Ubisch bodies found in tapetal cell help in formation of

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$A$ – Only some cells of the sporogenous tissue is capable of giving rise to microspore tetrad.

$R$- The microspores are arranged in a cluster of four cells – the microscopic tetrad.