Plants in which the seeds are produced on microsporophylls and are not enclosed by fruits are classified as:

Which of the following is the tallest tree in the world?

Assertion: $Ginkgo biloba$ is a living fossil.
Reason: Organisms which have persisted and remained unchanged for the past several million years while their relatives disappeared.

In gymnosperms,the microsporophyll can be compared to which of the following?

The lateral conduction in gymnospermic leaf is by

Which one of the following sets of structures in $Pinus$ belongs entirely to the gametophytic generation?