Question

Pteridophytes differ from bryophytes in having
(a)Vascular tissues
(b)Archegonia
(c)Motile sperms
(d)None of the above

Answer 1

Hint: Pteridophytes is a plant group that consists of horsetails and ferns whereas bryophytes is a plant group that consists of mosses and liverworts. Both these plant groups require cool, damp, and shady places to thrive properly.

Complete answer:
Pteridophytes differ from bryophytes in having vascular tissues as pteridophytes are the first terrestrial plants to possess xylem and phloem (vascular tissues) and bryophytes are less developed than pteridophytes. Bryophytes are primitive plants whose main plant body is gametophytic (haploid) and does not have true roots, stems, or leaves. Instead, the main plant body of bryophytes is thallus-like which contains root-like, stem-like, and leaf-like structures that do not contain any vascular tissues. Whereas the main plant body of pteridophytes is sporophytic (diploid) and contains true roots, stem, and leaves with well-differentiated vascular tissues.

Additional Information: -Archegonia is known as the female sex organ (reproductive structure) of the gametophyte and is responsible for producing the female gamete i.e. egg.
-Both pteridophytes and bryophytes have archegonia present in them.
-In bryophytes, the archegonium is flask-shaped and produces a single egg whereas the archegonium of pteridophytes is less developed.
-Motile sperms (male gametes) are produced by both pteridophytes and bryophytes.
-The male gametes of bryophytes also known as antherozoids are biflagellates that are released in the water through which they reach the archegonium.
So, the correct option is ‘Vascular tissues’.

Note: -Bryophytes along with lichen play an important role in plant succession and are known as pioneer species as they are the first organisms to colonize a new ecosystem on bare rocks/soil.
-Pteridophytes also have ecological significance as they are used as soil-binders. They are also used for medicinal purposes and ornamentals.
-Bryophytes are also given the title of the amphibians of the plant kingdom because they live in soil but require water for reproduction just like amphibians.