give the salient fetures of bryophyta
Answers
Answer:
They are relatively poorly adapted to life on land, so they are mainly confined to damp,shady places.
These are terrestrial non-vascular plants(no vascular tissue namely xylem and phloem) which still require moist environment to complete their life-cycle.
The plant body is slightly differentiated, though they do not have true roots, stems, and leaves.
They generally have something similar to roots called the rhizoids. The main body of the bryophytes is more thallus like and haploid.
Bryophytes are spore-producing plants that do not have a vascular tissue.
Explanation:
Answer:
General characterstics of division Bryophyta:
Special feature: The bryophytes are mostly terrestrial plants which depend on external water for fertilization and completion of their life cycle. Hence, they are called 'amphibian plants".
Rhizoids: Rhizoids are present instead of true roots. Rhizoids are unicellular in liverworts, while multicellular in mosses. Rhizoids absorb water and minerals. They also fix the plant to the substratum.
Vascular tissues: The vascular tissues are absent. However, in some bryophytes like mosses, a conducting strand of few thick-walled cells is present.
Habitat: Bryophytes generally grow in moist, cool and shady places such as moist walls, damp rocks, moist soil and on decaying legs.
Reproduction: Bryophytes reproduce by:
a. vegetative means by tubers and gemmae.
b. asexual reproduction by spore formation
c. sexual reproduction by the formation of gametes.
Alternation of generations:
The Bryophytes show two distinct generations, i.e. the gametophytic and the sporophytic generations.
They alternate with each other to complete their life cycle. This is known as heteromorphic alternation of generations.
The gametophyte is the dominant, green, haploid and independent phase; while sporophyte is diploid, recessive and partially dependent on gametophyte.