Q: What do sharks use to secrete salt to assist in osmoregulation?


Read this paragraph and choose the correct option from the provided answers:

animals exposed to similar levels of urea. Sharks are cartilaginous fish with a rectal gland to secrete salt and assist in osmoregulation.

 Choices:

- ceramic gland

- bladder gland

- blood gland

- rectal gland


A:
rectal gland