Question

When a person puts food in his mouth, then teeth cut it into small pieces, chew and grind it. The glands A in the mouth secrete a substances B which is mixed with the food by tongue. The substance B contains an enzyme C which starts the digestion of food in the mouth. The slightly food from the mouth goes down a tube D. The special types of movement E in the walls of tube D push the food into stomach for further digestion. The stomach wall secretes gastric juice containing three substances F G and H. One of the functions of F is to kill bacteria which may enter the stomach with food. The substance G protects the inside layer of stomach from damaging effect of substance F whereas substance H is an enzymes for digestion. The partially digested food then enters into small intestine for further digestion.

Q21. What is the name of gland A mentioned in the paragraph?

Pineal gland

Pituitary gland

Salivary gland

Thyroid gland

Q22. If enzyme C is lacking in the substance B, which event in the mouth will be affected?

Proteins breaking down into amino acids

Absorption of vitamins

Starch breaking down into sugars

Fats breaking down into fatty acids and glycerol

Q23. Name tube D mentioned in the above paragraph.

a. Oesophagus

b. Small Intestine

c. Ureter

d. Large intestine

Q24. What is the movement E known as?

a. Turgor movement

b. Circulation

c. Peristaltic movement

d. Centrifugation

Q25. Name the substance G which protects the inner lining of stomach.

a. Pepsin

b. HCL

c. Lipase

d. Mucus

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Answer 1

Answer:

sorry friend I can't answer such a big question