Question

One important phylum of kingdom Animalia of the two kingdom system was removed and placed in kingdom Protista of the five kingdom system. Name this phylum and give its important features.

Answer 1

The phylum Protozoa of the two kingdom system was shifted to kingdom Protista of the five kingdom system. The important features of phylum protozoa are:
(a) Its members are unicellular, microscopic organisms inhabiting water, damp soil or living as parasites.
(b) Their body is naked or covered by pellicle.
(c) Their locomotory organs are pseudopodia, cilia or flagella.
(d) They have holozoic, holophytic, saprozoic or parasitic mode of nutrition.
(e) They possess contractile vacuole for osmoregulation.