The phylum Ginkgophyta is represented by _________ living species.

What is the catapult for fern spores on the spore casings called?

Which gymnosperm phylum has monoecious trees?

If a tree is a dioecious species, then it has __________.

Archegoniophores and antheridiophores are features of _____________.

Which plants below have strobili (“false cones”)?

If a plant has male and female reproductive cones on it (on the same tree), it is called ____________.

All members of the plant kingdom are _______________.

The genus Selaginella belongs to which phylum?

The substance in horsetail stems that makes them unique is ______________.