Ubisch bodies are produced in . . . . . . .

Pollen grains are released from

In angiosperms,all $4$ microspores of a tetrad are covered by a layer which is formed by:

Which part of the reproductive structure produces both enzymes and hormones?

Select the correct option in which the following terms are arranged in the correct developmental sequence:
$(A)$ Pollen grain
$(B)$ Pollen mother cell
$(C)$ Microspore tetrad
$(D)$ Male gametes
$(E)$ Sporogenous tissue

Which of the following types of anther is found in the family $Malvaceae$?