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 substance in horsetail stems that makes them unique is ______________.

The genus Selaginella belongs to which phylum?

Structures with spiral thickenings that twist and untwist rapidly inside the capsule of the sporophyte to facilitate the release of spores from a liverwort capsule are called ________.

What is found in vallecular canals?

Which of the following groups of gymnosperms have vessels and tracheids in their wood (which produce harder wood than most gymnosperms are known for)?

The leaves of spike mosses (club mosses) have an appendage called

Volume of air that remains in the airways and does not participate in gas exchange is the:

Which of the following enzymes is NOT responsible for digesting proteins?