Sunday, July 12, 2009

Bryophytes include : a. ferns. b. horsetails. c. trees. d. mosses.?

D.. Mosses





Bryophytes: are plants that lack vascular tissue and require environmental water to reproduce. General characteristics of this group include: a waxy cuticle to slow down water loss and gametangia that protect developing gametes. The male gamatangium is called the antheridium which produces flagellated sperm. The female archegonium produces a single egg. Bryophytes need water to reproduce. They do not contain any vascular tissue for up right support. These plants usually form mats of horizontally growing tissue.


Mosses. Nonvascular plants that form spongy mats. The plant grips the ground with elongated cells called rhizoids. Photosynthesis occurs in the stem-like structures above the matted plant bodies. They undergo an alternation of generations with the haploid generation being the dominant form of this cycle. The sporophytes are generally smaller and depend on the gametophyte for water and protection.

Bryophytes include : a. ferns. b. horsetails. c. trees. d. mosses.?
Bryophytes are nonvascular plants, so the only possible answer here is D. mosses.
Reply:ferns


this is aptitude or entrance exam question or what ?


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