The figure (a) and (b) are depicting:

Options

A. Entry of pollen tube into filiform appara tus
B. Fertilisation of germ cells and zygote for mation
C. Entry of pollen tube into synergids
D. Entry of pollen tube and the discharge of male gametes into synergids

Answer

D

Explanation

Entry of pollen tube and the discharge of male gametes into synergids.
Explanation: Generally pollen tube enters through micropylar end and then enters one of the synergids through the filiform apparatus, The filiform apparatus present at the micropylar part, guides the entry of the pollen tube.