Question

In some heterosporous ferns we can see an event that is precursor to the for
seed
- a) What is the event
b) Give examples to those ferns​

Answer 1

The megaspores and microspores germinate and give rise to female and male gametophytes, respectively. ... The development of the zygotes into young embryos take place within the female gametophytes. This event Is the precursor to the seed habit which is considered as an important step in evolution.