During deficiency of oxygen in tissues of human beings,pyruvic acid is converted into lactic acid in the

Match the terms in Column $(A)$ with those in Column $(B)$:

Column $(A)$	Column $(B)$
$(a)$ Trypsin	$(i)$ Pancreas
$(b)$ Amylase	$(ii)$ Liver
$(c)$ Bile	$(iii)$ Gastric glands
$(d)$ Pepsin	$(iv)$ Saliva

$(a)$ Name the protein-digesting enzyme present in pancreatic juice and the hormone secreted by the pancreas.
$(b)$ What is the function of pancreatic juice?

What is the significance of emulsification of fats?

$(a)$ Draw a sectional view of the human heart and label the following parts on it:
Pulmonary artery,right atrium,left ventricle,septum.
$(b)$ What do the following transport?
$(i)$ Xylem
$(ii)$ Phloem
$(iii)$ Pulmonary vein
$(iv)$ Vena cava

$(a)$ Name the extensively coiled structure of the alimentary canal.
$(b)$ Compare the length of the small intestine in herbivores and carnivores.