Question

Diversity in living organims, to which division of criptogam do algae belong

Answer 1

The thallophytes (Thallophyta or Thallobionta) are a polyphyletic group of non-mobile organisms traditionally described as "thalloid plants", "relatively simple plants" or "lower plants". These plants mainly grow in water. They were a defunct division of kingdom Plantae that included fungus, lichensand algae and occasionally bryophytes, bacteria and the Myxomycota. Thallophytes have a hidden reproductive system and hence they are also called Cryptogamae (together with ferns), as opposed to Phanerogamae. The thallophytes are defined as having undifferentiated bodies (thalli), as opposed to cormophytes (Cormophyta) with roots and stems. It mainly grows in fresh water and it has fibre like body.