Homeostasis

Question 1

How do freshwater fish osmoregulate?

Answer 1

1. They drink very little water.
2. Filter excess water through glomeruli
3. Reabsorbs salts through convoluted tubes
4. Produce large amounts of dilute urine.

Question 2

How do saltwater fish osmoregulate?

Answer 2

1. Drink seawater.
2. Has fewer and smaller glomeruli
3. Excrete salts through convoluted tubes
4. Produce small amounts of concentrated urine.