Why are seedless vascular plants considered paraphyletic rather than monophyletic?
a.some of the groups within the seedless vascular plants (equisetophyta and pteridophyta) are more closely related to each other than to other groups (lycophyta).
b.they share a more recent common ancestor with seeded plants than they do with the non-vascular plants.
c.all of the groups contained within the seedless vascular plants do not have the same ancestor.
d.the group includes their common ancestor but also the seeded descendants of that same ancestor?

The plant containing the vascular tissues but cannot produce seeds or flowers is called seedless vascular plants. They can produce haploid unicellular spores.

The correct answer is:

Option d. The group includes their common ancestor but also the seeded descendants of that same ancestor.

This can be explained as:

The paraphyletic are the groups that originated from the common ancestor and are arranged in the order of their ranks and sizes.

In monophyletic the organism is said to be a descendant from a single ancestor.

Therefore, seedless vascular plants are paraphyletic as they include plants from common ancestors.

To learn more about monophyletic and paraphyletic follow the link:

https://brainly.com/question/25370836