Pollen tube at the time of entering the embryo sac has:

Growth of pollen tube towards the embryo sac is:

Through which path does the pollen tube enter the ovule?

In . . . . . . pollen grains cause allergy.

How many of the following statements are true about the figure given below?
i. Germination of pollen grain.
ii. Motile male gametes.
iii. Two male gametes and one female gamete.
iv. Pollen grain without exine.
v. Tube nucleus at the tip of pollen tube.

The structures which guide the pollen tube into the synergid are: