Some Large Benthic Invertebrates Lack a Gut Because

question 18

Multiple Choice

Some large benthic invertebrates lack a gut because

• A) They feed on dissolved organic matter
• B) No large benthic invertebrates lack a gut
• C) They have very low metabolic needs
• D) They have symbiotic bacteria, which provide nutrients

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Definitions:

Semilunar

Shaped like a half-moon or crescent; often used to describe certain valves or cartilages in the human body that have a crescent shape.

Half

Refers to one of two equal parts into which something is or can be divided.

Centi-

A prefix denoting a factor of one hundredth (1/100) in the metric system.

One Hundredth

A fractional unit that is one part of a hundred, commonly expressed as 1/100.