Question

What is Tapetum and its function

Answer 1

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Tapetum is the innermost layer of Microsporangium which has dense Cytoplasm.
Functions

i) It release Ubisch bodies.
ii) It provides nutrition to developing Pollen grain.
iii) It release callase enzyme.


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Answer 2

Tapetum : Its the innermost layer of the anther and highly nutritive, which is  in close contact with the pollen grains,hence have the function of providing them with nutrition. 

# Tapetum also has the function in formation of pollen grain wall (exine)

The layers in order from exterior to interior is as follows:
Epidermis(outermost)⇒Endothecium⇒middle layer ⇒ TAPETUM(inner most) ≡ pollen grains