Biology, asked by pns18, 6 months ago

2. Give two characterists and one example for each of the following
(v) Bryophyta

Answers

Answered by shikhargoyal
1

Give two characterists and one example for each of the following

(v) Bryophyta

Answered by smrutisanchita
2

Answer:

Characteristics of Bryophytes:

Plants occur in damp and shaded areas

The plant body is thallus like, i.e. prostrate or erect

It is attached to the substratum by rhizoids, which are unicellular or multicellular

They lack true vegetative structure and have a root-like, stem-like and leaf-like structure

Plants lack the vascular system (xylem, phloem)

Bryophytes show alternation of generation between independent gametophyte with sex organs, which produces sperm and eggs and dependent sporophyte which contains spores

The dominant part of the plant body is gametophyte which is haploid

The thalloid gametophyte is differentiated into rhizoids, axis and leaves

The gametophyte bears multicellular sex organs and is photosynthetic

The antheridium produces antherozoids, which are biflagellated

The shape of an archegonium is like a flask and produces one egg

The antherozoids fuse with egg to form a zygote

The zygote develops into a multicellular sporophyte

The sporophyte is semi-parasitic and dependent on the gametophyte for its nutrition

Cells of sporophyte undergo meiosis to form haploid gametes which form a gametophyte

The juvenile gametophyte is known as protonema

The sporophyte is differentiated into foot, seta and capsule.Eg-Liverwort

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