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Nutrition in Animals

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Question
CBSEENSC7001075
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Fill in the blanks:

(a) The main steps of nutrition in humans are __________, __________, ___________, __________ and __________

(b) The largest gland in the human body is __________.

(c) The stomach releases hydrochloric acid and ________ juices which act on food.

(d) The inner wall of the small intestine has many finger-like outgrowths called __________.

(e) Amoeba digests its food in the __________.

Solution

(a) The main steps of nutrition in humans are __ingestion__, __digestion__, __absorption__, __assimilation__ and __egestion__.

(b) The largest gland in the human body is __liver__.

(c) The stomach releases hydrochloric acid and __digestive__ juices which act on food.

(d) The inner wall of the small intestine has many finger-like outgrowths called __villi__.

(e) Amoeba digests its food in the _food vacuole_.

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Question
CBSEENSC7001076
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Mark ‘T’ if the statement is true and ‘F’ if it is false:

(a) Digestion of starch starts in the stomach. (T/F)

(b) The tongue helps in mixing food with saliva. (T/F)

(c) The gall bladder temporarily stores bile. (T/F)

(d) The ruminants bring back swallowed grass into their mouth and chew it for some time. (T/F)

Solution

(a) Digestion of starch starts in the stomach. (F)

(b) The tongue helps in mixing food with saliva. (T)

(c) The gall bladder temporarily stores bile. (T)

(d) The ruminants bring back swallowed grass into their mouth and chew it for some time. (T)

Question
CBSEENSC7001077
Wired Faculty App

Match the items of Column I with those given in Column II:

Column I Column II
Food components Product(s) of digestion
Carbohydrates Fatty acids and glycerol
Proteins Sugar
Fats Amino acids

Solution

Column I Column II
Food components Product(s) of digestion
Carbohydrates Sugar
Proteins Amino acids
Fats Fatty acids and glycerol

Question
CBSEENSC7001078
Wired Faculty App

What are villi? What is their location and function?

Solution

Villi are tiny finger-like projections originating from the walls of the small intestine. They increase the surface area for absorption of the digested food. The blood vessels present inside the villi can absorb the nutrients from the digested food.

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Structure of a villus

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