Which type of intestine is required by herbivores

(Q.56)  The gastric glands present in the wall of stomach release:

(A) Pepsin (B) Mucus (C) HCl (D) All the above (Q.57)  What is the difference between the walls of arteries and veins?

(A) Arteries have thick and elastic walls but veins do not have thick walls. (B) Veins have thick and elastic walls but arteries do not have thick walls. (C) Both have thin walls. (D) None of the above (Q.58)  Which type of intestine is required by herbivores?

(A) Shorter (B) Longer (C) Circular (D) None of the above (Q.59)  Process of digestion begins from which enzyme?

(A) Salivary amylase (B) Salivary ligase (C) Salivary trypsin (D) None of the above (Q.60)  What is the smallest unit of excretory system in human beings?

(A) Nephrons (B) Neurons (C) Alveolus (D) None of the above