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Q.

Choose the correct statement with respect to structure of microsporangium

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a

Tapetum is only protective in function

b

Cells of innermost layer of anther wall are usually dikaryotic or coenocytic.

c

Middle layers are present in between epidermis and endothecium.

d

Endothecium is sporogenous tissue of microsporangium.

answer is B.

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Detailed Solution

Tapetum is nutritive in function. Middle layers are present between endothecium and tapetum. Endothecium has fibrous thickenings and has hygroscopic nature to help in the breakage of anther. Innermost layer of microsporangial wall is tapetum which may be binucleate or coenocytic due to free nuclear divisions.

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