Question
Give reason :
Freshwater fish cannot survive in sea water.
Freshwater fish cannot survive in sea water.
✓
Answer
Freshwater fish cannot survive in sea water. This is because in freshwater, a fish is hypertonic to its surrounding. It means fish is "more salty" and water continually flows into the fish's body through osmosis. But in sea water, a fish is hypotonic or "less salty" compared to its surrounding. This means water flows out of the fish's body. Thus, freshwater fish cannot survive in sea water.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Differentiate
Amnion and Chorion.
Amnion and Chorion.
Explain the following in brief:
Effects of ethylene hormone on plants.
Effects of ethylene hormone on plants.
The diagram below shows part of the capillary bed in an organ of the human body. Some of the blood arriving at the capillaries at points labeled A, moves out into the spaces between the tissue cells. Study the diagram and answer the questions that follow:
State two important functions performed in our body by the fluid present in vessel X.
State two important functions performed in our body by the fluid present in vessel X.
Explain the Term: Natural reflex
Which hormones are secreted by anterior pituitary gland?
The diagram given alongside is that of a developing human foetus in the womb. Study the same and answer the questions that follows:
Name the parts ‘1’ to ‘5’ indicated by guidelines
Name the parts ‘1’ to ‘5’ indicated by guidelines
Explain the following term :
Gray matter
Gray matter
How prophase-I of meiosis differs from prophase of mitosis in an essential way? Describe how it affects the daughter cells?
Name an old age eye defect. What happens in it?
Differentiate between:
Ureter and Urethra.
Ureter and Urethra.