Salmon Eggs Hatch in Freshwater

question 25

Multiple Choice

Salmon eggs hatch in freshwater. The fish then migrate to the ocean (a hypertonic solution) and, after several years of feeding and growing, return to freshwater to breed. How can these organisms make the transition from freshwater to ocean water and back to freshwater?

• A) The rectal gland functions in the ocean water, and chloride cells function in freshwater.
• B) Different gill cells are involved in osmoregulation in freshwater than in salt water.
• C) Salmon in freshwater excrete dilute urine, and salmon in salt water secrete concentrated urine.
• D) Their metabolism changes in salt water to degrade electrolytes.

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Suppliers

Entities that provide goods or services to another company or individual, often as part of a supply chain or market.

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Portable personal computers with a clamshell form factor, suitable for mobile use and equipped with a screen and alphanumeric keyboard.

Equilibrium Price

The price at which the quantity of goods supplied is equal to the quantity of goods demanded, often considered the market-clearing price.

Equilibrium Quantity

The quantity of goods supplied is equal to the quantity demanded at the market equilibrium price.