NEET BIOLOGY

Detailed explanation-1: -This is probably the ancestral population. As it expanded south, the population became split by the San Joaquin Valley in central California, forming two different groups. In the Sierra Nevada the salamanders evolved their cryptic coloration.

Detailed explanation-2: -Breeding usually occurs in water, but some salamanders breed on land. A few species, such as the mole salamander and the lungless salamanders, practice courtship displays during the breeding season.

Detailed explanation-3: -HABITAT: California tiger salamanders can be found in annual grasslands and oak woodlands with hot, dry summers and cool, rainy winters. For most of the year, they reside in underground burrows created and abandoned by small mammals. They need ephemeral pools for breeding.