Question

An investigation was designed to determine how freshwater fish maintain homeostasis within their environment. It was observed that the concentration of substances inside the fish cells was much higher than the concentration of substances in ponds, lakes, and streams and that freshwater fish have a constant flow of water from the environment into their cells.
Based on these observations, in what type of environment must these fish live?
A
hypertonic
B
hypotonic
C
isotonic
D
osmotic

Answer 1

The freshwater fish must live in a hypotonic environment to maintain homeostasis

WHAT IS OSMOSIS:

• Osmosis is the movement of water from region of higher concentration of water or low concentration of solute to a lower concentration of water or higher concentration of solute.

• In terms of tonicity, a solution with high concentration of solute is called  whileHYPERTONIC a solution with low concentration of solute is called HYPOTONIC.

• If the freshwater fish regulates water loss by having a constant flow of water from the environment into their cells, then the FISHES must live in an environment that has a higher concentration concentration of water than their cells i.e. a HYPOTONIC SOLUTION.

Hence, the freshwater fish must live in a hypotonic environment to maintain homeostasis

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