Almost all fresh water animals are…….
a) osmoregulators
b) osmoconformers
c) none of them
d) all of these
Explanation: Freshwater fishes are hypertonic to their surrounding environment, which means that the concentration of salt is higher in their blood than their surrounding water.
Which of the following animals are generally hypertonic to their outer environment?
a) fresh water animals
b) marine water animals
c) terrestrial animals
d) none of these
Explanation: hypertonic means having higher solute concentration as compare to external environment
Why the animals living in fresh water face the problem of swelling up? It is because their bodies are……
a) hypertonic
b) isotonic
c) hypotonic
Which of the following animals do not face the shortage of water and hence they do not drink water?
a) fresh water animals
b) marine water animals
c) terrestrial animals
d) none of these
What is/are the major problem associated with animals living in fresh water?
a) loss of water
b) loss of salt
c) swelling up
d) both b and c
How the fresh water animals deal the problems they are facing in fresh water environment?
a) producing large amount of urine
b) kidney reabsorbs salts
c) actively transport salts from outside
d) all of these
