1. Some fish can maintain internal homeostasis even as they move between ocean w

Question

1. Some fish can maintain internal homeostasis even as they move between ocean water and freshwater. What term describes these fish?

a) Prehaline

b) Stenohaline

c) Antihaline

d) Euryhaline

2. When solution that differ in solute concentration are separated by a semipermeable membrane ____.

a) There is a net movement of water from the hyperosmotic side to the hypoosmotic side

b) There is a net movement of water from the hypoosmotic side to the hyperosmotic side

c) Water is trapped on the hypoosmotic side

d) Water moves through the membrane, but there is no net movement of water

Explanation / Answer

1. Euryhaline is the term used for the organisms that can survive in wide range of salinity. They can live easily in both the environment. Hence, the correct answer is option d.

2. In hyperosmotic side, there is higher concentration of solute, while in hypoosmotic side, there is low concentration of solute. Thus during osmosis water moves from low solute concentration solution to higher solute concentration solution to reach at equilibrium. Thus water moves from hypoosmotic side to hyperosmotic side. Hence, the correct answer is option b.

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