1. acquire water and get rid of salts
2. get rid of both water and salts
3. get rid of water and acquire salts
4. acquire both water and salts
acquire water and get rid of salts
1. ultra-filtration
2. storage of urine
3. secretion
4. selective reabsorption
storage of urine
1. osmosis
2. dialysis
3. plasmolysis
4. diffusion
dialysis
1. mammals
2. birds
3. amphibians
4. None of these
mammals
1. 1000c.c
2. 200c.c
3. 300c.c
4. 600c.c
1000c.c
1. pump salts out actively through the skin
2. excrete large amount of salts in its urine
3. excrete large amount of water in its urine
4. conserve water
conserve water
1. O2
2. Glucose
3. Urea
4. CO2
Urea
1. oxytocin
2. angiotensin
3. vasopressin
4. bradykinin
angiotensin
1. extract water from plasma
2. shrivel and die
3. would not be affected
4. burst open and die
shrivel and die
1. regulation of blood pressure
2. regulation of pH in the body fluid
3. secretion of antibodies
4. removal of excretory products from the body
secretion of antibodies