Invertebrates That Feed on the Algal Coating of Stones and Rubble

question 40

Multiple Choice

Invertebrates that feed on the algal coating of stones and rubble in streams and rivers are referred to as

• A)shredders.
• B)gougers.
• C)grazers.
• D)collectors.

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Definitions:

Anal Stage

A phase in Freudian psychosexual development centered around the child's control over bowel movements, typically occurring from age 18 months to three years.

Defense Mechanism

Psychological strategies used by individuals to cope with reality and maintain a self-image.

Repression

A defense mechanism that involves unconscious denial of the existence of something that causes anxiety.

Subliminal Perception

Perception below the threshold of conscious awareness.