A Shrimp That Occurs in Large Numbers Around Deep-Sea Hydrothermal

question 28

Multiple Choice

A shrimp that occurs in large numbers around deep-sea hydrothermal vents does not have eyes.Light-sensitive cells on the top of the body,however,appear to be used to detect faint light from:

• A)Bioluminescent predators.
• B)The surface.
• C)Faint glow around vents.
• D)Bioluminescent prey.
• E)Mates.

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Definitions:

Preoperational Thought

A stage in Piaget's theory of cognitive development occurring from ages 2 to 7, characterized by symbolic thinking, egocentrism, and a lack of logical operations.

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Disturbing dreams that can cause the sleeper to wake up feeling anxious and afraid, often occurring during REM sleep.

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