(a) Name the red pigment which carries oxygen in the blood. (b) Why is it necessary to separate oxygenated and deoxygenated blood in mammals and birds? (c) How many chambers are there in the heart of (i) an amphibian, (ii) a mammal, and (ii;) a fish? (d) Describe the circulatory system in a fish.

(a) Name the red pigment which carries oxygen in the blood. (b) Why is

1.	(a) Name the red pigment which carries oxygen in the blood. (b) Why is it necessary to separate oxygenated and deoxygenated blood in mammals and birds? (c) How many chambers are there in the heart of (i) an amphibian, (ii) a mammal, and (ii;) a fish? (d) Describe the circulatory system in a fish.
Answer» (a) Name the red pigment which carries oxygen in the blood. (b) Why is it necessary to separate oxygenated and deoxygenated blood in mammals and birds? (c) How many chambers are there in the heart of (i) an amphibian, (ii) a mammal, and (ii;) a fish? (d) Describe the circulatory system in a fish.