NCERT Class VII Science Solutions: Chapter 2-Nutrition in Animals Part 1 (For CBSE, ICSE, IAS, NET, NRA 2022)

Doorsteptutor material for CBSE/Class-7 is prepared by world's top subject experts: get questions, notes, tests, video lectures and more- for all subjects of CBSE/Class-7.

NCERT Class 7 Science Chapter 2: Nutrition in Animals

Question 1:

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 ________.

Answer:

  1. The main steps of nutrition in humans are ingestion, digestion, absorption, assimilation and egestion.
  2. The largest gland in the human body is liver.
  3. The stomach releases hydrochloric acid and digestive juices which act on food.
  4. The inner wall of the small intestine has many finger-like outgrowths called villi.
  5. Amoeba digests its food in the food vacuole.

Question 2:

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

Question 3:

Tick (√) marks the correct answer in each of the following:

  1. Fat is completely digested in the
    1. stomach
    2. mouth
    3. small intestine
    4. large intestine
  2. Water from the undigested food is absorbed mainly in the
  3. stomach
  4. food pipe
  5. small intestine
  6. large intestine

Answer:

  1. Fat is completely digested in the (C) small intestine (True)
Image Shows Small Intestine Absorbs Digested Food
  1. Water from the undigested food is absorbed mainly in the (D) large intestine (True)
This Image Shows the Large Intestine

Question 4:

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

Difference between Food Components and Product of Digestion (Q)
Column IColumn II
Food componentsProduct (s) of digestion
CarbohydratesFatty acids and glycerol
ProteinsSugar
FatsAmino acids

Answer:

Difference between Food Components and Product of Digestion
Column IColumn II
Food componentsProduct (s) of digestion
CarbohydratesSugar
ProteinsAmino acids
FatsFatty acids and glycerol

Developed by: