Apopular seedless vascular plant is
moss
the juniper
the fern
the rose

Option C, the ferns

Explanation:

Seedless vascular plants are those that have vascular system (xylem and phloem) but are unable to produce seeds.

Ferns are vascular trees which reproduce by producing spores as they do not produce seeds.

Mosses are also seedless but they do not have vascular system and hence it is not the right answer. While Juniper and rose, being vascular plant /trees on one hand also have seeds and hence they are also incorrect  answer choices.

Therefore, option C is correct

the answer is: trichonympha lives in the gut of termites and digests cellulose eaten by the termite.

this is an example of a symbiotic association of a protozoan with its mode of association.

hope i

-lavira: )