MCQ Questions for Class 11 Biology Chapter 16 Digestion and Absorption with Answers

Solving the Digestion and Absorption Multiple Choice Questions of Class 11 Biology Chapter 16 MCQ can be of extreme help as you will be aware of all the concepts. These MCQ Questions on Digestion and Absorption Class 11 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Have a glance at the MCQ of Chapter 16 Biology Class 11 and cross-check your answers during preparation.

I. Select the correct answer from the following questions:

Question 1.
Trypsin convert
(a) Fats into fatty acids
(b) Sucrose into glucose and fructose
(c) Proteins into peptones
(d) Starch and glycogen into maltose

Answer

Answer: (c) Proteins into peptones


Question 2.
Liver cells secrete
(a) Trypsin
(b) Bile and no enzyme
(c) Amvlopsin
(d) Lipase

Answer

Answer: (b) Bile and no enzyme


Question 3.
Bilirubin and biliverdin mainly occur in
(a) Blood
(b) Bile
(c) Pancreatic juice
(d) Saliva

Answer

Answer: (b) Bile


Question 4.
Milk protein is curdled into
(a) Rennin
(b) Maltase
(c) Trypsin
(d) Lactase

Answer

Answer: (a) Rennin


Question 5.
Amino acids are absorbed by
(a) Lacteals of villi
(b) wall of rectum
(c) Blood capillaries of villi
(d) Lacteals and blood capillaries of villi

Answer

Answer: (c) Blood capillaries of villi


Question 6.
Glycogen is stored in
(a) Liver only
(b) Liver and muscles
(c) Muscles only
(d) Pancreas

Answer

Answer: (b) Liver and muscles


Question 7.
Renin is found is
(a) Gastric juice in stomach
(b) Pancreatic juice
(c) Kidneys
(d) Liver

Answer

Answer: (a) Gastric juice in stomach


Question 8.
Digestion of fats, proteins and carbohydrates is completed in
(a) Large intestine
(b) small intestine
(c) stomach
(d) Liver

Answer

Answer: (b) Small intestine


Question 9.
Gastric juice contains
(a) Pepsin
(b) Rennin
(c) HCl
(d) All of these

Answer

Answer: (d) All of these


Question 10.
Which of these is a group of end product of carbohydrate digestion?
(a) Galactose, glucose, maltose
(b) Sucrose, galactose, maltose
(c) Glucose, galactose, fructose
(d) None of these

Answer

Answer: (c) Glucose, galactose, fructose


Question 11.
Human digestive juices lack
(a) Amylase
(b) Nucleases
(c) Cellulase
(d) Lactase

Answer

Answer: (c) Cellulase


Question 12.
In alimentary canal maximum absorption of water occurs in
(a) Rectum
(b) Stomach
(c) Small intestine
(d) Large intestine

Answer

Answer: (a) Rectum


Question 13.
Starch is hydrolysed by
(a) Lipase
(b) Pepsin
(c) Amylase
(d) Trypsin

Answer

Answer: (c) Amylase


Question 14.
Chief function of bile is
(a) Emulsfication of fat
(b) Regulation of digestion
(c) Elimination of waste products
(d) Digestion of fat through enzymes.

Answer

Answer: (a) Emulsfication of fat


Question 15.
Gastric juice contains
(a) Pepsin, lipase and rennin
(b) Pepsin, trypsin and rennin
(c) Pepsin only
(d) Pepsin, amylase and rennin

Answer

Answer: (a) Pepsin, lipase and rennin


Question 16.
Trypsin changes
(a) Protein to polypeptides
(b) Starch to sugar
(c) Fats to fatty acids and glycerol
(d) All of these

Answer

Answer: (a) Protein to polypeptides


Question 17.
HCl of gastric juice is produced by
(a) Oxyntic cells
(b) Chief cells
(c) Columnar
(d) Goblet cells

Answer

Answer: (a) Oxyntic cells


Question 18.
Glycogen is formed from
(a) Lactic acid
(b) Amino acids
(c) Glucose
(d) All of these

Answer

Answer: (d) All of these


Question 19.
The end product of carbohydrate digestion is
(a) Lactose
(b) Maltose
(c) Sucrose
(d) Glucose

Answer

Answer: (d) Glucose


Question 20.
teeth are used for cutting food.
(a) Incisors
(b) Canines
(c) Molar
(d) Premolar

Answer

Answer: (a) Incisors


Question 21.
The secretion that lubricates the alimentry canal
(a) Bile juice
(b) Pepsin
(c) Gastric juice
(d) Mucus

Answer

Answer: (d) Mucus


Question 22.
On chewing food became sweet since
(a) Food contains vitamin B
(b) Food contains sugar
(c) Salivary gland pour saliva
(d) None of the above

Answer

Answer: (c) Salivary gland pour saliva.


Question 23.
Largest gland of human body is
(a) Heart
(b) Pancreas
(c) Liver
(d) None of the above

Answer

Answer: (c) Liver


Question 24.
Large instestine is a muscular tube of about
(a) 1.5 m
(b) lm
(c) 2.5 m
(c) 2m

Answer

Answer: (a) 1.5 m


Question 25.
Arrangement of teeth in each half of the upper and lower jaw in the order I, C, PM, M is representd by a dental formula which in human is
(a) \(\frac { 3212 }{ 3212 }\)
(b) \(\frac { 2123 }{ 2123 }\)
(c) \(\frac { 2123 }{ 3212 }\)
(d) \(\frac { 2312 }{ 2321 }\)

Answer

Answer: (b) \(\frac { 2123 }{ 2123 }\)


II. Fill in the blanks:

Question 1.
The major components of our food are …………, …………… and …………..

Answer

Answer: Carbohydrates, proteins, fat


Question 2.
Food provides energy and ……………. for growth and repair of tissues.

Answer

Answer: organic materials


Question 3.
……………. in food cannot be utilised by our body in their original form.

Answer

Answer: Bio macromolecules


Question 4.
Digestive system process of conversion of complex food substances to simple absorbale form is called …………….

Answer

Answer: digestion


Question 5.
An adult human has 32 permanent teeth which are of four different types, namely …………, …………., ………….. and ……………

Answer

Answer: incisors (I), Canine (C), Premolars (PM), molars (M)


Question 6.
The stomach, located in the upper left portion of the abdominal cavity, has ………… major parts.

Answer

Answer: three


Question 7.
The colon is divided into three parts …………….. and a descending part.

Answer

Answer: an ascending, a transverse


Question 8.
The wall of alimentary canal from oesophagus to rectum possess four layers namely serosa, …………, ………….. and ……………

Answer

Answer: muscularis, sub mucosa, mucosa


Question 9.
Villi are supplied with a network of capillaries and a large lymph vessel called the …………….

Answer

Answer: lacteal


Question 10.
All the four layers show …………….. in different parts of the alimentary canal.

Answer

Answer: modifications


Question 11.
…………. is the largest gland of the body weighing about ……………. in an adult human.

Answer

Answer: Liver, 1.2 to 1.5 kg


Question 12.
Each lobule is covered by a thin connective tissue sheath called the ………………

Answer

Answer: Glisson’s capsule


Question 13.
Mucus in saliva helps in lubricating and adhering the masticated food particles into ……………

Answer

Answer: a bolus


Question 14.
The bolus is then conveyed into the pharynx and then into the oesophagus by swallowing or …………….

Answer

Answer: deglutition


Question 15.
Variuos types of movement are generated by the …………….. of small intestine.

Answer

Answer: musularis layer


III. Mark the statements True (T) or False (F)

Question 1.
In diarrhoea the skin and the eyes turn yellow due to the deposit of bile pigments.

Answer

Answer: False


Question 2.
The abnormal frequency of bowel movement and increased liquidity of the faecal discharge is known as jaundice.

Answer

Answer: False


Question 3.
The causes of indigestion are inadequate enzyme secretion, anxiety, food poisoing, over eating and spicy food.

Answer

Answer: True


Question 4.
Absorption of substances take place in different parts of the alimentary canal, like mouth, stomach, small intestine and large intestine.

Answer

Answer: True


Question 5.
Fatty acids and glycerol being insoluble, cannot be absorbed into the blood.

Answer

Answer: True


Question 6.
Small amounts of monosaccharides like glucose, amino acids and some of electrolytes like chloride ions are generally absorbed by a simple diffusion.

Answer

Answer: True


Question 7.
The functions of small intestine are (i) absorption of some water, minerals and certain drugs (ii) secretion of mucus which help in adhering the waste (undigested) particles together and lubricating it for an easy passage.

Answer

Answer: False


Question 8.
Fats are broken down by lipases with the help of bile into di- and monoglycerides.

Answer

Answer: True


Question 9.
Nucleases in the pancreatic juice acts on nucleic acids to form nucleotides and nucleoides.

Answer

Answer: True


Question 10.
The secretions of the brush border cells of the mucosa along – with the secretions of the goblet cells constitute the intestinal juice or succus entericus.

Answer

Answer: True


Question 11.
The gastric juice contains inactive enzymes, trypsinogen, chymotrypsinogen, procarboxypeptidases, amylases, lipases and nucleases.

Answer

Answer: False


Question 12.
The food mixes thoroughly with the acidic gastric juice of the stomach by the churning movements of its muscular wall and the villi.

Answer

Answer: False


Question 13.
The gastro-oesophageal sphincter controls the passage of food into the stomach. The saliva secreted into the oral cavity contains electrolytes (Na+, K+, Cl, HCO) and enzymes, salivary amylase and lysozyme.

Answer

Answer: True


Question 14.
The pancreas is a compound elongated organ situated between the limbs of the ‘U’ shaped duodenum.

Answer

Answer: True


Question 15.
The bile secreted by the hepatic cells passes through the hepatic ducts and is stored and concentrated in a thin muscular sac called the gall bladder.

Answer

Answer: True


IV. Match the items in the two columns.

Column IColumn II
(a) Small intestine1. Elastic bag
(b) Pancreas2. Largest part of the food canal
(c) Duodenum3. Gland located in the band of duodenum
(d) Pharynx4. Narrow worm shaped projection
(e) Appendix5. Receives bile and pancreatic juice
(f) Colon6. Common passage for air breathed and the food swallowed
(g) Liver7. Largest gland in body
(h) Stomach8. Has three limbs ascending transverse and descending
(i) Parotid9. Bile juice
(g) HCl10. Small intestine
(k) Biliverdin and bilirubin11. Small intestine
(l) Villi and microvilli12. Dental formula in human
(m) abdominal cavity13. into the blood by this mechanism
(n) I, C, PM, M 2123/212314. Gastric juice
(o) Various nutrients like amino acids, monsacharides like glucose, electrolytes like Na+ are absorbed15. cardiac, fund, pyloric portions
Answer

Answer:

Column IColumn II
(a) Small intestine2. Largest part of the food canal
(b) Pancreas3. Gland located in the band of duodenum
(c) Duodenum5. Receives bile and pancreatic juice
(d) Pharynx6. Common passage for air breathed and the food swallowed
(e) Appendix4. Narrow worm shaped projection
(f) Colon8. Has three limbs ascending transverse and descending
(g) Liver7. Largest gland in body
(h) Stomach1. Elastic bag
(i) Parotid11. Small intestine
(g) HCl14. Gastric juice
(k) Biliverdin and bilirubin9. Bile juice
(l) Villi and microvilli10. Small intestine
(m) abdominal cavity15. cardiac, fund, pyloric portions
(n) I, C, PM, M 2123/212312. Dental formula in human
(o) Various nutrients like amino acids, monsacharides like glucose, electrolytes like Na+ are absorbed13. into the blood by this mechanism

 


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