Gymnosperms include which of the following?

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:

Coralloid roots of $Cycas$ are useful in

Select the false statement.

Seed of $Pinus$ shows three generations as:

Which of the following plants does not have seeds enclosed within an ovary?