Respuesta :

#19

Polar nuclei fuse to produce Diploid secondary nucleus.

#20

After fertilisation the antipodal cells undergo meosis

#21

In which of the following double fertilisation occurs.

Ans:- Angiosperm s

#22..

In angiosperms pollen grains germinate on the Anther.

Answer:

q.19 Diploid Secondary nucleus

q.20 Undergoes miosis

q.21 Angiosperms

q.22Anther