Question

The biological adaptation that allows frogs to obtain water for their survival during conditions
of water scarcity is the
(A) presence of modified tongue that acts like a sponge to suck water from damp soils.
(B) presence of water channels in the skin by which they absorb water from their sur-
roundings.
(C) presence of ciliated oesophagus that helps in separating water from ingested partic-
ulate matter.
(D) selective feeding on plants with large amount of water that would fulfill the water requirements.

Answer 1

Amphibians absorb water through their skin and do not need to drink. In areas where water is scarce, amphibians are able to simply absorb any moisture within the soil.

Frog being an amphibian does the same.

Hence option (a) is most suitable.

Hope this helps :)