Question

A feature of fertilization that is found only in angiosperms is that:
1) the sperm may be carried by wind to the female organ
2) one sperm fertilizes the egg , while another combines with the polar nuclei
3) a pollen tube carries a sperm nucleus into the female gametophyte
4) a chemical attractant guides the sperm towards the egg

Answer 1

I chemical attractant guides the sperm towards the egg