PT151.S3.Q1

PrepTest 151 - Section 3 - Question 1

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Researchers put two electrodes in a pool that a dolphin swam in. ████ ███ ███████ ████ ████ ███ ███████████ ███ ███████████ █████ █████████ ██████ █ ████ ████████ █████ ██ ██████████ ███ ███████████ ███ ███████ █████ ████ ████ ██ ███ ██████████ ████ ██████████ █████████ ██ █████ █████████ ███ ███████████ ████ ██████ █ ███████ ██████ ████ █████ ██████ ██████ █████████ ██████ ███████ ██ ███ █████████ ██████ ████ ███ ██████ ████████ ███ ███████ ██ ██████ ████ ████ ████ ███ ██████████ ████ ██████████

Summary

Researchers placed electrodes in a pool with a dolphin. When activated, the electrodes created a weak electric field, causing the dolphin to swim away. When they were not activated, the dolphin behaved normally. After covering the dolphin's vibrissal crypts with a plastic shield, the dolphin no longer swam away when the electrodes were activated.

Strongly Supported Conclusions

The vibrissal crypts impact a dolphin’s ability to detect electric fields.

Dolphins instinctively swim from electrical fields

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1.

The statements above, if true, ████ ████████ ███████ █████ ███ ██ ███ ██████████

a

In the wild, ████████ █████████ █████████ ██████ ████████ ███████

b

Vibrissal crypts enable ████████ ██ █████ ████████ ███████

c

Dolphins do not █████████████ █████ ████████ ███████ ███ ████ ███ ██ ███████ ██ ██ ███

d

Electric fields interfere ████ ███ ██████ ███████████ ██ ███████████ █████████ ███████

e

Under normal circumstances, ████████ ███ ██████ ██ █████ ████████ ███████

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