What is the correct sequence of events required for fish to detect the physical presence of other fish within the school?
A) water currents cause the cilia within the gelatinous membrane to bend which causes a nerve impulse to go to the brain
B) sound waves cause the cilia within the gelatinous membrane to bend which causes a nerve impulse to go to the brain
C) a chemical signal will cause the cilia within the gelatinous membrane to bend which causes a nerve impulse to go to the brain
D) water currents cause a nerve impulse to go directly to the brain
E) a chemical signal will cause a nerve impulse to go directly to the brain

Question

Quizplus · Accepted Answer

Fish detect the physical presence of other fish within the school through the movement of water currents. These currents cause the cilia within their gelatinous membrane to bend, which triggers a nerve impulse to go to the brain, allowing the fish to sense the presence and location of other fish. Sound waves and chemical signals can also play a role in communication within schools of fish, but are not the primary means of physical detection. Option D and E are incorrect because water currents must act on the cilia to produce the nerve impulse.

What Is the Correct Sequence of Events Required for Fish