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Question (41)

QN001501

Small stones swallowed by birds help mainly in

(A) breathing
(B) absorption
(C) grinding food in the gizzard
(D) producing digestive juices

Correct Answer: C

Explanation:

Grit helps grind food in the gizzard.

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Question (42)

QN001502

A cow quickly swallows grass while grazing and later chews it again. Why?

(A) To cool the body
(B) To mix food with blood
(C) To digest tough plant food efficiently
(D) To absorb more oxygen

Correct Answer: C

Explanation:

Rumination helps digest plant food properly.

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Question (43)

QN001503

Which of the following best shows adaptation in digestion among animals?

(A) All animals digest food in exactly the same way
(B) Only humans have digestive systems
(C) Different animals have different digestive structures based on food habits
(D) Digestion happens only in the stomach in all animals

Correct Answer: C

Explanation:

Animals have different digestive adaptations.

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Question (44)

QN001504

A bird is unable to swallow grit for many days. Which activity may become less efficient?

(A) Grinding of food
(B) Breathing
(C) Blood circulation
(D) Egg laying

Correct Answer: A

Explanation:

Grit helps birds grind food.

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Question (45)

QN001505

Which of the following correctly matches the organ with its function?

(A) Liver — stores stool
(B) Small intestine — main absorption of nutrients
(C) Large intestine — major digestion of proteins
(D) Oesophagus — production of bile

Correct Answer: B

Explanation:

Nutrients are mainly absorbed in the small intestine.

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Question (46)

QN001506

If the finger-like projections in the small intestine are damaged, what is the most likely effect?

(A) Better chewing of food
(B) Reduced nutrient absorption
(C) Faster egestion
(D) Increased saliva production

Correct Answer: B

Explanation:

Damaged projections reduce absorption area.

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Question (47)

QN001507

A student says that digestion ends in the stomach. Which fact proves the statement incorrect?

(A) Saliva is present in the mouth
(B) Nutrient absorption mainly occurs in the small intestine
(C) Teeth crush food
(D) Food enters the oesophagus after swallowing

Correct Answer: B

Explanation:

Digestion and absorption continue in the small intestine.

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Question (48)

QN001508

Why is the large intestine called “large intestine”?

(A) It is longer than the small intestine
(B) It absorbs more nutrients
(C) It is wider than the small intestine
(D) It contains more digestive juices

Correct Answer: C

Explanation:

The large intestine is wider in diameter.

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Question (49)

QN001509

Fermented foods like curd and buttermilk are considered beneficial mainly because they

(A) stop absorption completely
(B) support a healthy digestive system
(C) remove all bacteria from the intestine
(D) digest proteins outside the body

Correct Answer: B

Explanation:

Fermented foods help maintain digestive health.

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Question (50)

QN001510

Which sequence correctly shows the movement of food in the human alimentary canal?

(A) Mouth → Stomach → Oesophagus → Small intestine → Anus
(B) Mouth → Oesophagus → Stomach → Small intestine → Large intestine → Anus
(C) Mouth → Liver → Stomach → Large intestine → Anus
(D) Mouth → Pancreas → Oesophagus → Stomach → Anus

Correct Answer: B

Explanation:

Food passes through oesophagus, stomach, small intestine, large intestine, and anus.

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Question (41)

Small stones swallowed by birds help mainly in

Explanation:

Link:

Question (42)

A cow quickly swallows grass while grazing and later chews it again. Why?

Explanation:

Link:

Question (43)

Which of the following best shows adaptation in digestion among animals?

Explanation:

Link:

Question (44)

A bird is unable to swallow grit for many days. Which activity may become less efficient?

Explanation:

Link:

Question (45)

Which of the following correctly matches the organ with its function?

Explanation:

Link:

Question (46)

If the finger-like projections in the small intestine are damaged, what is the most likely effect?

Explanation:

Link:

Question (47)

A student says that digestion ends in the stomach. Which fact proves the statement incorrect?

Explanation:

Link:

Question (48)

Why is the large intestine called “large intestine”?

Explanation:

Link:

Question (49)

Fermented foods like curd and buttermilk are considered beneficial mainly because they

Explanation:

Link:

Question (50)

Which sequence correctly shows the movement of food in the human alimentary canal?

Explanation:

Link:

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