Question

Psilophytes, lycophytes, horsetails, and ferns are plants
A) Multicellular aquatic
B) Seedless vascular
C) Diploid dominant
D) Seed bearing vascular

Answer 1

Hint:The plants psilophytes, lycophytes, horsetails, and ferns all are pteridophytes which are vascular plants with xylem and phloem in them. They are also called cryptogams.

Complete answer:
Pteridophytes (psilophytes, lycophytes, horsetails, and ferns) are free-sporing vascular plants. Their life cycle alternates between free-living gametophyte and sporophyte phases. The root system of pteridophytes is adventitious.The sporophyte is well differentiated into roots, stem and leaves while the stem is either underground or aerial. Furthermore, the leaves may be microphylls or megaphylls.

Let us analyze the options to find out the correct options.

Option A: Pteridophytes are those plants that grow on land and have some of their parts found underground. They are not aquatic in nature.Therefore, this is the incorrect option.
Option B: Pteridophytes are those plants which are vascular as they have the presence of vascular system xylem and phloem. However, they do not bear any seeds. They are land plants plesiomorphies which means spore dispersal and seeds are absent in these plants.Therefore, this is the correct option.
Option C: Bryophytes including mosses and liverworts are the example for diploid dominant plants. Therefore, this is the incorrect option.
Option D: Pteridophytes are those plants which are called cryptogams because they do not bear any seeds and are seedless plants. That is why they are said to have their reproduction hidden.Therefore, this is the incorrect option.

Thus, the correct answer is option (B) Seedless vascular.

Note:Pteridophytes are the first terrestrial plants that are known to possess xylem and phloem as their vascular system. Since they alternate life cycles a diploid phase is followed by a haploid phase.