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Scenario Salmon Eggs Hatch in Freshwater Streams And, During Their First

question 46

Multiple Choice

Scenario
Salmon eggs hatch in freshwater streams and, during their first year of life, the young salmon migrate distances up to 1,000 km in order to reach the ocean. Here they spend up to 5 years where they feed and grow, acquiring more than 95% of their biomass. During the summer of their maturing year, they begin the long journey back to their home streams to spawn. Although it is still uncertain how salmon navigate back to their spawning grounds, current hypotheses suggest that they have a highly developed sense of smell that allows them to remember odors they encountered on their migration to the ocean. They then use these odors to help them navigate back to the streams where they were born. At the spawning grounds, females use their tails to form a hollow cavity in the stream gravel where they lay up to 8,000 eggs. The males fertilize the eggs, and both adults typically die soon thereafter.
-At different times in their lives, salmon can be found in all but one of these biomes. Choose the EXCEPTION.

Definitions:

Anabolism

The aspect of metabolism that involves the creation of complex molecules from simpler ones, leading to growth.

Hydrolysis

A chemical reaction where water is used to break down the bonds of a compound, resulting in the decomposition of that compound into its constitutive elements or simpler compounds.

Oxidation-Reduction

A chemical process involving the transfer of electrons between two substances, affecting their oxidation states and energy levels.

Reversible Reaction

A chemical reaction that can proceed in both directions, where products can revert to the original reactants under certain conditions.