A) Euglena
B) Paramecium
C) Amoeba
D) Plasmodium
Correct Answer: D
Solution :
Contractile vacuole present in members of phylum-Protozoa except class-Sporozoa e.g., Plasmodium. Contractile vacuoles helps in osmoregulation i.e., regulation of water contents in the protoplasm when a Protozoa kept in hypotonic medium as in freshwater.
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