Read the following statements and choose correct statement: (A) All protozoans are heterotrophs ...

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Read the following statements and choose correct statement:
(A) All protozoans are heterotrophs and lives as predators or parasites.
(B) In all members of phylum Arthopoda excretion takes place through Malpighian tubules.
(C) All the general characters of Nereis are similar to earthworm due to this these both are placed into the same phyla.
(D) Members of mollusca have a segmented body which have distinct head, muscular foot and visceral hump.
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