Question

Which of the following are the amphibians of the plant kingdom?
A. Pteridophyte
B. Bryophyte
C. Cycas
D. All of the above

Answer 1

Hint: Amphibians are those organisms which live under the water. Generally plants grow on land, but there is one phylum of plant kingdom which needs to water for its reproductive phase.

Complete Answer:
The plant kingdom includes all the plants present on the Earth. The classification of plants in the plant kingdom is done on the basis of,
(I) Seed formation
(II) Plant body
(III) Vascular system

Option A: The phylum pteridophyta has plants whose body is well differentiated into stem, root and leaves. Presence of the vascular system is also seen. These plants do not require water for their reproductive phase. Therefore, this is the incorrect option.

Option B: Bryophytes are known as land inhabitants or terrestrial plants. They undergo their vegetative phase and complete it on land while the water is necessary for their reproductive phase i.e. for completing their different life cycles. Thus, bryophytes are commonly known as the amphibians belonging to the plant kingdom. Therefore, this is the correct option.

Option C: Cycas comes under the phylum gymnosperms and they do not require water for their reproductive phase. Therefore, this is the incorrect option.

Thus, the correct option is B) Bryophytes.

Note: The characteristics of plant kingdom are,
(I) They have various organelles which help them in photosynthesis and anchorage.
(II) They can produce asexually and sexually.
(III) They are non-motile.
(IV) They have the presence of a cell wall.
(V) They are eukaryotic and autotrophic.