Class 7 Science Chapter 2 Nutrition in Animals

Class 7 Science Chapter 2 Nutrition in Animals – Solutions

NCERT Class 7 Science Chapter 2 Nutrition in Animals Question-answer

Exercises

Fill in the blanks:

  1. The main steps of nutrition in humans are __________, __________,__________, _________ and __________.
  2. The largest gland in the human body is __________.
  3. The stomach releases hydrochloric acid and ___________ juices which act on food.
  4. The inner wall of the small intestine has many finger-like outgrowths called _________.
  5. Amoeba digests its food in the ____________ .

Answers:-

  1. Ingestion, digestion, absorption, assimilation and egestion.
  2. Liver
  3. Digestive
  4. Villi
  5. food vacuole.

 

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

  1. Digestion of starch starts in the stomach. (T/F)
  2. The tongue helps in mixing food with saliva. (T/F)
  3. The gall bladder temporarily stores bile. (T/F)
  4. The ruminants bring back swallowed grass into their mouth and chew it for some time. (T/F)

Answer:-

  1. False 
  2. True 
  3. True
  4. True

 

Tick (ü) mark the correct answer in each of the following:

 

(a) Fat is completely digested in the

  • stomach
  • mouth
  • small intestine
  • large intestine

Answer – small intestine

 

(b) Water from the undigested food is absorbed mainly in the

  • stomach
  • foodpipe
  • small intestine
  • large intestine

Answer – large intestine

 

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

Column I                                                      Column II

1. Food components    a. Product(s) of digestion
2. Carbohydrates    b.  Fatty acids and glycerol
3. Proteins      c.  Sugar
4. Fats        d. Amino acids

 Answers

1- a, 2.  – c, 3. – d, 4. – b

 

Q. – What are villi? What is their location and function?

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