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Digestion and Absorption Class 11 MCQs Questions 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 I | Column II |
| (a) Small intestine | 1. Elastic bag |
| (b) Pancreas | 2. Largest part of the food canal |
| (c) Duodenum | 3. Gland located in the band of duodenum |
| (d) Pharynx | 4. Narrow worm shaped projection |
| (e) Appendix | 5. Receives bile and pancreatic juice |
| (f) Colon | 6. Common passage for air breathed and the food swallowed |
| (g) Liver | 7. Largest gland in body |
| (h) Stomach | 8. Has three limbs ascending transverse and descending |
| (i) Parotid | 9. Bile juice |
| (g) HCl | 10. Small intestine |
| (k) Biliverdin and bilirubin | 11. Small intestine |
| (l) Villi and microvilli | 12. Dental formula in human |
| (m) abdominal cavity | 13. into the blood by this mechanism |
| (n) I, C, PM, M 2123/2123 | 14. Gastric juice |
| (o) Various nutrients like amino acids, monsacharides like glucose, electrolytes like Na+ are absorbed | 15. cardiac, fund, pyloric portions |
Answer
Answer:
| Column I | Column II |
| (a) Small intestine | 2. Largest part of the food canal |
| (b) Pancreas | 3. Gland located in the band of duodenum |
| (c) Duodenum | 5. Receives bile and pancreatic juice |
| (d) Pharynx | 6. Common passage for air breathed and the food swallowed |
| (e) Appendix | 4. Narrow worm shaped projection |
| (f) Colon | 8. Has three limbs ascending transverse and descending |
| (g) Liver | 7. Largest gland in body |
| (h) Stomach | 1. Elastic bag |
| (i) Parotid | 11. Small intestine |
| (g) HCl | 14. Gastric juice |
| (k) Biliverdin and bilirubin | 9. Bile juice |
| (l) Villi and microvilli | 10. Small intestine |
| (m) abdominal cavity | 15. cardiac, fund, pyloric portions |
| (n) I, C, PM, M 2123/2123 | 12. Dental formula in human |
| (o) Various nutrients like amino acids, monsacharides like glucose, electrolytes like Na+ are absorbed | 13. into the blood by this mechanism |
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