Question

7. a) What will happen it mucus is not secreted by the gastrie glands?
by Why does absorption of digested food occur mainly in small intestine?
c) What is common for cuscuta, ticks and leeches?
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Answer 1

Answer:

if mucus is not secreted the inner linning of the stomach will damage due to hcl

2 ans villi

3ans they are come in parasitic nutrition

Answer 2

Answer:

a.Gastric glands in stomach release hydrochloric acid, enzyme pepsin and mucus. The mucus protects the inner lining of the stomach from the action of hydrochloric acid and enzyme pepsin. If mucus is not released, it will lead to erosion of inner lining of stomach, which may cause acidity and ulcer. Ultimately, mucus provides a protection against acids and enzymes in the stomach.

b.

Absorption of water from the small intestine is concerned with the absorption of salts and digested food in order to maintain an osmotic balance with the blood. Reason : All these increase internal surface area of small intestine for efficient food absorption.

c.

Cuscuta,ticks and leeches , all are parasites , i.e., organism which feeds on another living organism called its host. ... A parasite receives its food from the host but gives no benefit to host in return.

Explanation:

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