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Question

Match the items of Column I with suitable items in Column II

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Column I

-

Column II

(a)

Salivary gland

(i)

Bile juice secretion

(b)

Stomach

(ii)

Storage of undigested food

(c)

Liver

(iii)

Saliva secretion

(d)

Rectum

(iv)

Acid release

(e)

Small intestine

(v)

Digestion is completed

(f)

Large intestine

(vi)

Absorption of water

-

-

(vii)

Release of faeces

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Solution

(a) Salivary Gland (iii) Saliva secretion

  1. Salivary glands are within our buccal cavity and is known to release saliva which contains salivary amylase to digest starch and also bind the chewed food.
(b) Stomach (iv) Acid release
  1. It is a J-shaped pouch that receives the bolus and the stomach releases HCl which activates the pepsin enzyme in the stomach and breaks down the proteins.
  2. Here, the food is mixed with water, and chyme is formed.
(c) Liver (i) Bile juice secretion
  1. It is the largest gland in the human body, brown in color, and produces bile which is used for the breakdown of fats in the small intestine.
(d) Rectum (ii) Storage of undigested food
  1. After the water and minerals are absorbed by the large intestine the leftover waste gathers in the rectum until it is expelled via the anus.
(e) Small intestine (v) Digestion is completed
  1. It is a highly coiled organ with three distinct regions named duodenum, jejunum, and ileum respectively, and is lined with micro finger-like structures on the inner side.
  2. The chyme moves into the small intestine for the final stage of digestion.
  3. Within the small intestine, the enzymes from the liver and pancreas are secreted which break down the fats and proteins further.
(f) Large intestine (vi) Absorption of water
  1. It is a much wider tubular structure with three parts ending at the anus. This is where the water and minerals are absorbed and the undigested food passes through this.

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Column I

-

Column II

(a)

Salivary gland

(iii)

Saliva secretion

(b)

Stomach

(iv)

Acid release

(c)

Liver

(i)

Bile juice secretion

(d)

Rectum

(ii)

Storage of undigested food

(e)

Small intestine

(v)

Digestion is completed

(f)

Large intestine

(vi)

Absorption of water


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