$A$ : The generative cell comes to lie freely in the cytoplasm of the tube cell.
$R$ : Cellulosic wall around generative cell is dissolved.
Assertion and Reason both are correct and also correct explanation.
Assertion and Reason both are correct but not explanation of assertion.
Assertion is correct, but Reason is incorrect.
Both Assertion and Reason are incorrect.
Pollens have two prominent walls which are ... $A$... and ... $B$ .... Here $A$ and $B$ refers to
Which part of the reproductive structure produces both enzymes and hormones
Ubisch bodies are secreted by
The most resistant organic material known which makes up the outermost layer of pollen wall is