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  4. Callase enzyme which dissolves callose of pollen tetrads to separate four pollens is provided by

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Q. Callase enzyme which dissolves callose of pollen tetrads to separate four pollens is provided by

Sexual Reproduction in Flowering Plants

Solution:

Tapetum secretes Ubisch bodies which get covered with sporopollenin and so increase thickness of exine of pollen grain wall. Tapetum provides nourishment to developing microspores. It also secretes callase enzyme which dissolves callose substances by which four pollens of a pollen tetrad are united, hence separating microspores or pollens of a tetrad.