Question

Which of the following is true of protists? A. They are all parasitic B. None of...

Which of the following is true of protists?

A.

They are all parasitic

B.

None of them can photosynthesize


C.

Together, they form a monophyletic group

D.

They share a common ancestor with plants, animals and fungi

E.

They include numerous taxa with complex tissues

Homework Answers

Answer #1

Ans:

D. They share a common ancestor with plants, animals and fungi

Explanation: Protists are a diverse group of mostly unicellular eukaryotic organisms (no complex tissue) . They are free-living or live symbiotically with other organisms. This symbiosis can be mutualistics (between termites and the protists that live in their gut.) or parasitic. They does not form a monophyletic group rather form a paraphyletic group. The animal-like protists are protozoa (amoeba), the plant-like photosynthetic protists are algae (diatoms, Euglena) and fungi-like protists are slime molds. So, protists  share a common ancestor with plants, animals and fungi.

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