Question

Bryophytes are the first land plants but incompletely adapted to land conditions as
(i) Plant body is parenchymatous.
(ii) Protonema is present.
(iii) Male gametes are mobile.
(iv) Stomata are absent in liverworts.
Which of the above-mentioned statement(s) is/are correct?

• A. Only (i)
• B. Only (iii)
• C. (i), (ii) and (iii)
• D. (i), (ii), (iii) and (iv)

Answer 1

The correct option is D (i), (ii), (iii) and (iv)

Bryophyta is the division of kingdom Plantae comprising of Mosses, Hornworts and Liverworts. Protonema is a filamentous structure produced by the germination of the spore in mosses from which the leafy plant which bears the sexual organs arises as a lateral or terminal shoot. Gases simply diffuse across the plant surface so stomata are absent in Liverworts. The plant body consists of simple parenchymatous cells. The male gametes are biflagellate, hence mobile. Thus the correct answer is option D.