Check the below NCERT MCQ Questions for Class 11 Biology Chapter 16 Digestion and Absorption with Answers Pdf free download. MCQ Questions for Class 11 Biology with Answers were prepared based on the latest exam pattern. We have provided Digestion and Absorption Class 11 Biology MCQs Questions with Answers to help students understand the concept very well.
Digestion and Absorption Class 11 MCQs Questions with Answers
Question 1.
Which part of brain causes nausea?
(a) Pons
(b) Hypothalamus
(c) Parietal lobe
(d) Medulla
Answer
Answer: (d) Medulla
Explanation:
Vomiting is the ejection of stomach contents through mouth.
This is the reflex action which is controlled by medulla.
A feeling of nausea preceds vomiting.
Question 2.
Correct enzyme-substrate pair is
(a) Maltose-lactase
(b) Protein-amylase
(c) Carbohydrate-lipase
(d) Casein-rennin
Answer
Answer: (d) Casein-rennin
Question 3.
Peyers patches found in the small intestine are
(a) Epithelial tissue
(b) Glandular tissue
(c) Lymphatic tissue
(d) Haemopoietic tissue
Answer
Answer: (c) Lymphatic tissue
Question 4.
During prolonged fasting, in what sequence are the following organic compounds used up by the body?
(a) First carbohydrates, next proteins and lastly lipids
(b) First carbohydrates, next fats and lastly proteins
(c) First fats, next carbohydrates and lastly proteins
(d) First proteins next lipids and lastly carbohydrates
Answer
Answer: (b) First carbohydrates, next fats and lastly proteins
Question 5.
In glycolysis ultimately
(a) starch is converted into glucose
(b) glucose is converted into fructose
(c) protein is converted into glucose
(d) glucose is converted into pyruric acid
Answer
Answer: (d) glucose is converted into pyruric acid
Question 6.
If for some reason our goblet cells are non-functional this will adversely affect
(a) Smooth movement of food down the intestine
(b) Production of somatostatin
(c) Secretion of sebum from the sebaceous glands
(d) Maturation of sperms
Answer
Answer: (a) Smooth movement of food down the intestine
Question 7.
The HCl in gastric juice converts:
(a) Disaccharide to monosaccharide
(b) Pepsinogen to pepsin
(c) Prorennin to rennin
(d) Polypeptide to peptide
Answer
Answer: (b) Pepsinogen to pepsin
Question 8.
Which enzyme is used in alcoholic fermentation of yeast?
(a) Maltase
(b) Invertase
(c) Sucrase
(d) Zymase
Answer
Answer: (d) Zymase
Question 9.
Assimilation means
(a) utilising the water taken by body
(b) accumulating the food for digestion
(c) utilisation of absorbed substances
(d) collecting wastes left after the absorption of required nutrients
Answer
Answer: (c) utilisation of absorbed substances
Explanation:
The absorbed substances finally reach the tissues which utilise them for their activities. This process is called assimilation.
Question 10.
The pH scale is used to measure
(a) Electric charge on ion
(b) Speed with which ions form
(c) Size of ions
(d) Concentration of hydrogen ions in a solution
Answer
Answer: (d) Concentration of hydrogen ions in a solution
Question 11.
Which of the following part of human intestine hosts microorganisms?
(a) Colon
(b) Caecum
(c) Anus
(d) Rectum
Answer
Answer: (b) Caecum
Explanation:
Caecum is a small blind sac which hosts some microorganisms.
Question 12.
Duct leading from parotid gland and opening into vestibule is
(a) Wolffian duct
(b) Stensons duct
(c) Haversian duct
(d) Infra-orbit duct
Answer
Answer: (b) Stensons duct
Question 13.
Which organ is most affected by jaundice?
(a) Pancreas
(b) Liver
(c) Stomach
(d) Intestine
Answer
Answer: (b) Liver
Explanation:
Jaundice affects liver. Skin and eyes turn yellow due to the deposition of bile pigments.
Question 14.
Globet cells of intestinal mucosal epithelium secrete
(a) mucus
(b) cholesterol
(c) peptones
(d) bilirubin
Answer
Answer: (a) mucus
Explanation:
Intestinal mucosal epithelium has globet cells which secrete mucus.
Question 15.
Emulsification of fat takes place through
(a) Liver enzymes
(b) Bile pigments
(c) Bile salts
(d) Enzymes of small intestine
Answer
Answer: (c) Bile salts
Question 16.
Epithelial cells of the intestine involved in food absorption have on their surface
(a) phagocytic vesicles
(b) pinocytic vesicles
(c) microvilli
(d) zymogen granules
Answer
Answer: (c) microvilli
Question 17.
Carrier ions like Na+ facilitate the absorption of substances like
(a) Fructose and some amino acids
(b) Amino acids and glucose
(c) Glucose and fatty acids
(d) Fatty acids and glycerol
Answer
Answer: (a) Fructose and some amino acids
Question 18.
The glucose is converted into glycogen in liver and stored in
(a) Liver and spleen
(b) Liver and muscle
(c) Liver
(d) Spleen and muscles
Answer
Answer: (c) Liver
Question 19.
Small projections of upper surface of tongue are called
(a) fimbriae
(b) pilli
(c) papillae
(d) cilia
Answer
Answer: (c) papillae
Explanation:
The upper surface of the tongue has small projections called papillae, some of them bears taste buds.
Question 20.
Sweetest sugar is
(a) Fructose
(b) Sucrose
(c) Glucose
(d) Lactose
Answer
Answer: (a) Fructose
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