Identify the odd one out.

Which one of the following pairs of plant structures has a haploid $(n)$ number of chromosomes?

Give the differences between Microsporangium and Megasporangium.

How many of the following statements are true about angiosperms?
$A$. The generative cell floats in the cytoplasm of the vegetative cell.
$B$. The stalk of the ovule is called the funiculus.
$C$. Pollen grains are shed at the two-celled stage.
$D$. The embryo sac is diploid.
$E$. The megaspore mother cell towards the chalazal end becomes functional.

In the gametophytic phase,which of the following occurs?

In angiosperms,microsporogenesis and megasporogenesis are . . . . . . .