Which of the Following Statements About Protozoans Is True

question 9

Multiple Choice

Which of the following statements about protozoans is true?

• A) They are unicellular eukaryotes that demonstrate animal-like characteristics in both food consumption and motility.
• B) They only enter into parasitic relationships with a host.
• C) They have cellular features like flagella, cilia and pseudopodia that help attain food and aid movement.
• D) They may have complex life cycles alternating between cyst and trophozoite stages.

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Definitions:

Parasympathetic

The branch of the autonomic nervous system responsible for regulating the body's rest and digest functions, opposing the sympathetic system.

Sympathetic

Part of the autonomic nervous system responsible for the body's "fight or flight" response to stress.

Parasympathetic

Relating to the part of the autonomic nervous system that conserves energy by slowing down the heart rate and increasing intestinal and gland activity.

Somatic

Relating to the body, especially as distinct from the mind.