Q 1. Arrange the following terms in the correct developmental sequence: Pollen grain, sporogenous tissue, microspore tetrad, pollen mother cell, male gametes.
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Explanation:

Pollen grain is the first cell of male gametophyte wherein male gamete develops. The correct sequence is sporogenous tissue, pollen mother cell, microspore tetrad, pollen grain and male gamete.

lysosome is this part of the cell is surrounded by a very thick outer membrane to protect the rest of the cell from its strong enzymes.