Distinguishing features of Bryophytes

Distinguishing features of Bryophytes:

A. They are minute terrestrial plants.

B. They are lacking a distinct root system however are attached to the substratum by means of thin, filamentous outgrowth of the thallus termed as rhizoids.

C. Water and mineral salts can be absorbed by the entire surface of the plant body, comprising the rhizoids. Therefore the main function of rhizoids is anchorage, dissimilar true roots (i.e., true roots too possess vascular tissues, as do true stems and leaves). Therefore the “leaves” and “stems” found in several Bryophytes are not homologous with stems and leaves of vascular plants. The plant body is termed as thallus.

D. They do not hold accurate vascular tissues.

E. Male sex organ is termed as antheridium and female sex organ is termed as archegonium.

F. Sex organs are multi-cellular and they contain protective jacket layer of the sterile cells.

G. The sexual reproduction is of oogamous kind.

H. Bryophytes exhibit distinct alternation of gametophytic generation by means of sporophytic generation.

I. Gametophyte generation is independent and dominant.

J. Sporophyte generation is much small, microscopic and dependent on gametophyte phase.

 

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