Gymnosperms do not have

The male prothallus $(gametophyte)$ in $Pinus$ consists of:

The number of ovules present on the megasporophyll of $Cycas$ is:

With respect to the life cycle of $Pinus$,considering the formation of the female cone in the summer of year $0$,when does fertilization occur?

Which of the following is not applicable to the sporophytic phase of Cycas?

Explain the life cycle in Gymnosperms.