Class 6 General Science Notes: - Unit-4: Human Digestive System: Solved Exercise (MCQs)

A. MCQs (Choose the Correct Answers).

1. Hamna likes to eat junk food and refuses to eat fruits and vegetables. She will become. You take a piece of bread and break it into smaller pieces. It is an example of:

a. Physical digestion
b. Chemical digestion
c. Enzyme action
d. Absorption

... Answer is a. Physical digestion
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2. Bile helps in fat digestion. It is secreted by:

a. Stomach
b. Pancreas
c. Liver
d. Gall bladder

... Answer is c. Liver
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3. Two parts of digestive system are involved in both physical and chemical digestion. They are:

a. Mouth and esophagus
b. Mouth and stomach
c. Stomach and small intestine
d. Small and large intestine

... Answer is b. Mouth and stomach
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4. The food you eat takes almost 24 hours to move from mouth to anus. This movement is due to the contractions of:

a. Cardiac muscles
b. Smooth muscles
c. Skeletal muscles
d. Voluntary muscles

... Answer is b. Smooth muscles
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5. Large molecules of food are broken into small molecules of food with the help of:

a. Teeth
b. Tongue
c. Muscles
d. Enzymes

... Answer is a. Teeth
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6. The undigested food is removed from the body by the process of:

a. Ingestion
b. Digestion
c. Absorption
d. Egestion

... Answer is d. Egestion
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7. The small food molecules produced after digestion of food are taken to other parts of the body by: :

a. Muscles
b. Saliva
c. Blood
d. Intestine

... Answer is c. Blood
--------------------

8. Bile is stored in:

a. Liver
b. Gall bladder
c. Pancreas
d. Small intestine

... Answer is b. Gall bladder
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9. The food we eat may be solid or liquid, but stomach converts it to:

a. Soupy gel
b. Soupy mixture
c. Solid balls
d. Watery solution

... Answer is b. Soupy mixture
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10. Stomach produces enzymes and acid for digestion of:

a. Carbohydrates
b. Proteins
c. Fats
d. Oil

... Answer is b. Proteins
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MCQs of General Science Class-6:

Unit-1, Unit-2, Unit-3, Unit-4, Unit-5, Unit-6, Unit-7, Unit-8, Unit-9, Unit-10, Unit-11, Unit-12

Source: General Science Book (National Book Foundation, Pakistan)

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