Which of the Following Is True of Members of the Phylum

question 20

Multiple Choice

Which of the following is true of members of the phylum Cnidaria?

• A) They are not capable of locomotion because they lack true muscle tissue.
• B) They are primarily filter feeders.
• C) They have either, or both, of two body forms: mobile polyps and sessile medusae.
• D) They may use a gastrovascular cavity as a hydrostatic skeleton.
• E) They are the simplest organisms with a complete alimentary canal (two openings).

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Definitions:

Conditions

Circumstances or factors that affect the outcome of a situation, experiment, or process.

Amine Subtype

Refers to the classification of chemicals or receptors in the brain based on their ability to interact with specific types of amine neurotransmitters.

Small-molecule Neurotransmitters

Chemical substances used by neurons to communicate with each other across synapses, including amino acids, monoamines, and acetylcholine.

Glycine

An amino acid neurotransmitter in the central nervous system that primarily inhibits or decreases the activity of neurons.