29. Assertion: Amphibians cannot survive in sea water.Reason: Amphibians
have lungs for breathing on land these would collapse under the water
pressure of the sea
O
A. Both assertion and Reason are correct. Reason is correct explanation of the
assertion
O
B. Both assertion and Reason are correct. Reason is not correct explanation to
assertion
O C. assertion is correct but reason is incorrect
O D. assertion is incorrect but reason is correct
Answers
However, an increasing number of studies have found amphibian species that are able to adapt to and tolerate salt water habitats, especially those in coastal marshes. ... This unique species can live in freshwater as well as 75% seawater and can adapt from one to the other in a matter of hours
so according to this option D is correct
The correct option is: C. assertion is correct but reason is incorrect
Assertion: Amphibians cannot survive in sea water.
The above assertion statement is true as amphibians can live in freshwater. And they would not be able to survive in sea water as it is saline.
Reason: Amphibians have lungs for breathing on land these would collapse under the water pressure of the sea
Amphibians do have lungs for breathing on land. But, these would NOT collapse under the water pressure of the sea as given. Hence, the reason statement is incorrect.
The correct reason why amphibians cannot survive in sea water is that the body of the amphibians neither has scales nor an impermeable exoskeleton. Owing to this reason, their body will lose the the water because of exosmosis.