Lophotrochozoans That Respire by Means of a Frilly, Loop-Shaped Organ

question 21

Multiple Choice

Lophotrochozoans that respire by means of a frilly, loop-shaped organ called a lophophore are called

• A) ecdysozoans.
• B) brachiopods.
• C) gastropods.
• D) cephalopods.

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Definitions:

Unconditioned Stimulus

A stimulus that automatically triggers a response without any need for prior conditioning.

Meat Powder

Ground or finely divided meat used in various contexts, including as a food ingredient or in laboratory settings as a stimulus in the study of animal behavior.

Conditioned Response

A learned response to a previously neutral stimulus that has been repeatedly presented along with an unconditioned stimulus.

Tone

can refer to the quality or character of sound, or in linguistics, the use of pitch in language to distinguish lexical or grammatical meaning.