Anther is generally composed of
One sporangium
Two sporangium
Three sporangium
Four sporangium
Pollens outer layer is called ...$A$... This is made up of ...$B$.... This is absent on the ...$C$.... Fill in the blanks $A, B$ and $C$
Identify $A$ to $D$ in the following diagram
Describe internal structure of microsporangium.
Which of the following statements is correct?