Give reason : the sweat gland is surrounded by a lot of blood capillaries?

Answer: The statement is true

Reason is that the capillaries pass water containing waste to the sweat gland.

Explanation:

The sweat gland is surrounded by a lot of blood capillaries because its cells absorb water containing small quantities of waste such as mineral salts and urea from the capillaries to form sweat.

Once sweat reaches the skin surface, it evaporates, thus cooling the skin.