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What is common about Trypanosoma, Noctil...

What is common about Trypanosoma, Noctiluca, Monocystis and Giardia ?
(a) these are all parasites
(b) these are all unicellular protists
(c) they have flagella
(d) they produce spores

A

these are all parasites

B

these are all unicellular protists

C

they have flagella

D

they produce spores

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