Sudorific glands are also known as

Which of the following vertebrates respires through its skin?

Sweat glands are absent in humans on:

Carotene pigment is found in the cells of

$A$ substance responsible for making the $stratum \text{ } lucidum$ cells of the epidermis of the skin of a rabbit transparent is:

Due to the weakening of collagen fibres,the skin gets stretched. For its control,the proper diet is