Which of the following is a fossil plant?

What types of leaves are found in gymnosperms?

Pine wood consists of almost entirely

In $Pinus$,the approximate time for fertilization after pollination is:

Assertion $(A)$: Gymnosperms lack true fruits.
Reason $(R)$: Gymnosperms lack an ovary.
Which option is correct for Assertion $(A)$ and Reason $(R)$?

In which of the following is the gametophytic phase reduced,short-lived,and limited to the production of gametes?