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Salmon are bony fish (teleost) that spend considerable portions of their lives in the ocean. In this environment, values of salmon plasma osmolarity are about 300 mosm. As they swim about in the ocean, which statement is true?

A. There will be no net force to drive water either into or out of the fish.

B. There will be a net pressure for water to enter the fish.

C. There will be a net pressure for water to flow out of the fish.

D. Osmotic pressure will first force water into the fish, and then with time flip and force water out of the fish.

E. Pressures will first force water out of the fish, and then with time flip and force water into the fish.

Respuesta :

Answer:

B. There will be a net pressure for water to enter the fish.

Explanation:

Salmon are  born in fresh water and migrate to oceans for most of their life. They maintain homeostasis through the process of osmoregulation, where salmon control osmosis to maintain a water balance in ocean.

The salt water is hypo-tonic to their surroundings so the water molecules  move out of the body cells as a result of osmosis and salmon dehydrates. Then the hormones of salmon help to adapt the condition and  their will be a net pressure for water to enter the fish.

Hence, the correct option is B.

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