Sunday, February 20, 2005

Amphibian, Adaptations

The amphibian eye has a lid, associated glands and ducts, and muscles that allow accommodation as well as depth perception and true colour vision. These adaptations are regarded as the first evolutionary improvements in vertebrate terrestrial vision. Green rods in the retina, which permit perception of a wide range of wavelengths, are found only in amphibians.


Post a Comment

<< Home