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NCERT Exemplar · Class 11 · Biology

Chapter 16: Digestion and Absorption

Practice each question, then open the answer or worked solution.

Multiple Choice Questions

10 questions
Q1Multiple choice

Select what is not true of intestinal Villi among the followings 

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Correct option: D
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Worked solution

Ans: The correct answer is Option (d).

The small intestine helps in the digestion of all the nutrients like carbohydrates, fats and proteins.

Q2Multiple choice


Hepato-pancreatic duct opens into the duodenum and carries 

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Correct option: C
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Worked solution

Ans: The correct answer is Option (c) Both bile and pancreatic juice 

The bile juice enters through the hepatic tract, and the pancreatic juice enters through the pancreatic tract.


Q3Multiple choice

One of the following is not a common disorder associated with the digestive system 

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Correct option: A
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Worked solution

Ans: The correct answer is Option (a) Tetanus 

Tetanus is a disorder that affects the muscles.


Q4Multiple choice

A gland not associated with the alimentary canal is 

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Correct option: B
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Worked solution

Ans: The correct answer is Option (b) Adrenal 

The Adrenal glands are located above each kidney that is included in the excretory system.


Q5Written answer

Match the two columns and select the correct among options given 

Column I

Column II

A. Biomacromolecules of food

(i) Alimentary canal and associated gland

B. Human digestive system

(ii) Embedded in jawbones

C. Stomach

(ii) Outer wall of visceral organs

D. Thecodont

(iv) Converted into simple substances

E. Serosa

(v) J-shaped bag-like structure


Options: 

(a) A – (ii), B – (i), C – (v), D – (iii), E – (iv) 

(b) A – (iv), B – (i), C – (v), D – (ii), E – (iii) 

(c) A – (i), B – (ii), C – (iii), D – (iv), E – (v) 

(d) A – (i), B – (iii), C – (ii), D – (iv), E – (v) 

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Worked solution

Ans: The correct answer is Option (b) A – (iv), B – (i), c – (v), D – (ii), E – (iii)


Q6Written answer

Match the two columns and select the right one among the options given 

Column I

Column II

A. Duodenum

(i) A cartilaginous flap

B. Epiglottis

(ii) Small blind sac

C. Glottis

(iii) U shaped structure emerging from the stomach

D. Caecum

(iv) Opening of windpipe


Options: 

(a) A – (i), B – (ii), C – (iii), D – (iv) 

(b) A – (iv), B – (iii), C – (ii), D – (i) 

(c) A – (iii), B – (i), C – (iv), D – (ii) 

(d) A – (ii), B – (iv), C – (i), D – (iii) 

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Worked solution

Ans: The correct answer is Option (c) A-(iii), B-(i), C-(iv), D-(ii)


Q7Written answer

Match the enzyme with their respective substrate and choose the right one among options given

Column I

Column II

A. Lipase

(i) Dipeptides

B. Nuclease

(ii) Fats

C. Carboxypeptidase

(iii)Nucleic acid

D. Dipeptidases

(iv) Proteins, peptones and proteases


Options: 

(a) A – (ii), B – (iii), C – (i), D – (iv)

(b) A – (iii), B – (iv), C – (ii), D – (i) 

(c) A – (iii), B – (i), C – (iv), D – (ii) 

(d) A – (ii), B – (iii), c – (iv), D – (i) 

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Worked solution

Ans: The correct answer is Option (d) A – (ii), B – (iii), C – (iv), D – (i)


Q8Multiple choice

Dental formula in human beings is

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Correct option: B
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Worked solution

Ans: The correct answer is Option (b) $\dfrac{2123}{2123}$

Each side of the upper and lower jaw consists of two incisors, one canine, two premolars and three molars.


Q9Multiple choice

Liver is the largest gland and is associated with various functions; choose one which is not correct 

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Correct option: D
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Worked solution

Ans: The correct answer is Option (d) Secretion of a hormone called gastrin 

The stomach secretes the hormone gastrin during digestion.


Q10Multiple choice

Mark the right statement among the following 

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Correct option: A
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Worked solution

Ans: The correct answer is option (a).

Enzyme trypsinogen is secreted by the pancreas in the inactive form. It is activated by enterokinase in the small intestine.