CAT (VARC) PYQs

Mexican tetra cavefish are similar to non-cave-dwelling variants in their early stages of development.

The caves have poor and inconsistent availability of food and nutrition for Mexican tetra cavefish.

The inefficiency resulting from eyelessness is compensated by enhancements like more tastebuds in Mexican tetra cavefish.

The lack of light in the caves kills the eye cells in the developing Mexican tetra cavefish embryo.