Use the Following Information to Answer the Question

question 58

Multiple Choice

Use the following information to answer the question.
A farm pond, usually dry during winter, has plenty of water and aquatic pond life during the summer. One summer, Sarah returns to the family farm from college. Observing the pond, she is fascinated by some six-legged organisms that can crawl about on submerged surfaces or, when disturbed, seemingly "jet" through the water. Watching further, she is able to conclude that the "mystery organisms" are ambush predators, and their prey includes everything from insects to small fish and tadpoles.
Sarah observed that the mystery pond organisms never come up to the pond's surface. If she catches one of these organisms and observes closely, perhaps dissecting the organism, she should find ________.

• A) gills
• B) spiracles
• C) tracheae
• D) book lungs

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Definitions:

Motor Cortex

The region of the cerebral cortex involved in the planning, control, and execution of voluntary movements.

Cerebrum

The largest part of the brain, responsible for various higher functions such as thought, action, and emotion.

Corpus Callosum

The large band of neural fibers connecting the two brain hemispheres and carrying messages between them.

Hippocampus

A major component of the brain involved in learning and memory formation.