In $Gymnosperms$, the endosperm is .......

In which class of gymnosperms are fossils present?

Given below are two statements:
Statement $I$: In gymnosperms, the male and female gametophytes remain within the sporangia.
Statement $II$: In gymnosperms, seeds are not covered.
In the light of the above statements, choose the most appropriate answer from the options given below:

Describe the important characteristics of gymnosperms.

Pinus seed shows:

Most of the gymnosperms have