Concept explainers
Introduction:
Fishes are the gill-bearing creatures which live in the water. These creatures are categorized under sub-phylum vertebrate in Pisces class. They are cold-blooded animals with the presence of gills for the purpose of respiration.
Answer to Problem 1SQ
Correct answer:
A freshwater fish gains most of its water by osmosis. Hence, the correct answer is option c.
Explanation of Solution
Reason for correct answer:
Option c. is given as “osmosis.”
The freshwater fishes carry high salt concentration than the surrounding body. The process of osmosis draws water into the body of fish by their gills and skin. It results in increasing the solvent concentration of the fish body.
Reason for incorrect answer:
Option a. is given as, “drinking.”
Fishes do not drink too much water. The water helps in excreting the waste material from the body of fish in the form of ammonia. Hence, option a. is incorrect.
Option b. is given as, “eating food.”
The food contains fibers and other nutrients which are essential for the body of fish. Hence, option b. is incorrect.
Option d. is given as, “transport across the gills.”
The transpiration of water across the gills of fish causes the exchange of gases. Hence, option d. is incorrect.
Hence, the options a, b, and d are incorrect.
A freshwater fish gains most of its water by the process of osmosis. Thus, the correct option is c.
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Chapter 37 Solutions
EBK BIOLOGY:CONCEPTS+APPL.
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