Question

Give reasons for :
(i) Oxygenated and deoxygenated bloods are separate in the heart of mammals.
(ii) Ventricles are thick walled.
(iii) Herbivores have longer small intestine as compared to carnivores.


CBSE Class X Science SA 2 (3 Marks)

Answer 1

(i) This allows a highly efficient supply of oxygen, and meet their high energy needs (as they are warm-blooded animals).

(ii) Because they have to pump blood throughout the body or into various organs.

(iii) To allow cellulose to be digested. 

Answer 2

Answer:

(i) This allows a highly efficient supply of oxygen, and meet their high energy needs (as they are warm-blooded animals).

(ii) Because they have to pump blood throughout the body or into various organs.

(iii) To allow cellulose to be digested.