Help please I need answers by tommorow plz

The main difference between vascular and nonvascular plants is that a vascular plant has vascular vessels to carry water and food to all the different parts of the plant. ... Instead, a nonvascular plant has rhizoids, small hairs that keep the plant in place.

The difference between seed plants and seedless plants is that seedless plants do not bear seeds for propagation, whereas seed plants bear seeds for multiplication. ... Seedless plants multiply by spores that may produced asexually or as a consequence of asexual reproduction.

Gymnosperms. Angiosperms, also called flowering plants, have seeds that are enclosed within an ovary (usually a fruit), while gymnosperms have no flowers or fruits, and have unenclosed or “naked” seeds on the surface of scales or leaves. Gymnosperm seeds are often configured as cones.

The answer is constant.