Please refer to Chapter 16 Digestion and Absorption MCQ Class 11 Biology with answers below. These multiple-choice questions have been prepared based on the latest NCERT book for Class 11 Biology. Students should refer to MCQ Questions for Class 11 Biology with Answers to score more marks in Grade 11 Biology exams. Students should read the chapter Digestion and Absorption and then attempt the following objective questions.

MCQ Questions Class 11 Biology Chapter 16 Digestion and Absorption

The Digestion and Absorption MCQ Class 11 Biology provided below covers all important topics given in this chapter. These MCQs will help you to properly prepare for exams.

Question. Which of the following statement is true regarding the digestion and absorption of food in humans?
(a) About 60% of starch is hydrolysed by salivary amylase in our mouth.
(b) Chylomicrons are small lipoprotein particles that are transported from the intestine into the blood capillaries.
(c) Glucose and amino acids are absorbed through the intestinal mucosa with the help of carrier proteins.
(d) Oxyntic cells in our stomach secrete the proenzyme pepsinogen.

Question. Mucus secreted by the goblet cells, combined with bicarbonates maintains the alkaline medium of the intestine. The source of bicarbonates is :
(a) Intestinal mucosa
(b) Gall bladder
(c) Pancreas
(d) Brunner’s gland

Question. Which is the following options regarding sites of digestion is correct?

Question. Which of the following is not associated with innermost mucosa layer of small intestine?
(a) Intestinal glands 
(b) Microvilli
(c) Duodenal glands 
(d) Goblet cells

Question. Which of the following disease is called as protein energy malnutrition?
(a) Marasmus
(b) Kwashiorkar
(c) Gaucher’s disease
(d) Both 1 and 2

Question. A person with folic acid deficiency will have erythrocytes which are
(a) immature and larger than normal erythrocytes.
(b) immature and smaller than normal erythrocytes.
(c) mature and larger than normal erythrocytes.
(d) mature and smaller than normal erythrocytes.

Question. Gastrin and secretin are secreted respectively by.
(a) Stomach and small intestine
(b) Stomach and Stomach
(c) Small intestine and small intestine
(d) Small intestine and stomach

Question. In the tissues, high concentration of carbon dioxide-
(a) Increases the affinity of haemoglobin to both oxygen and hydrogen.
(b) Increases the affinity of haemoglobin to oxygen but decreases its affinity to hydrogen
(c) Decreases the affinity of haemoglobin to oxygen but increases its affinity to hydrogen.
(d) Decreases the affinity of haemoglobin to both oxygen and hydrogen

Question. Select the correct option regarding respiratory volumes and capacities.
(a) Total Lung Capacity = Vital capacity + Tidal Volume 
(b) Vital Capacity = Total Lungs Capacity- Residual Volume
(c) Vital Lung Capacity = Tidal Volume + Residual Volume
(d) Total Lung Capacity = Tidal Volume + Inspiratory Reserve Volume

Question. i. Mammals have negative pressure breathing.
ii. The impulses for voluntary breathing are sent by the cerebrum.
iii. The trachea, primary, secondary and tertiary bronchi, and initial bronchioles
are supported by incomplete cartilaginous rings.
iv. The volume of air remaining in the lungs even after a forcible expiration is called functional residual capacity.
How many of the above statements are correct?
(a) Two 
(b) Three
(c) One 
(d) Four

Question. Which part of brain causes nausea?
(a) Pons
(b) Hypothalamus
(c) Parietal lobe
(d) Medulla

Question. Epithelial cells of the intestine involved in food absorption have on their surface
(a) pinocytic vesicles
(b) phagocytic vesicles
(c) zymogen granules
(d) microvilli

Question. Two friends are eating together on a dining table. One of them suddenly starts coughing while swallowing some food. This coughing would have been due to improper movement of
(a) diaphragm
(b) neck
(c) tongue
(d) epiglottis

Question. 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

Question. 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

Question. Muscularis layer of the wall of the alimentary canal is formed by:-
(a) Smooth muscle arranged into an inner longitudinal and an outer circular layer
(b) Smooth muscle arranged into an inner circular and an outer longitudinal layer
(c) Skeletal muscle arranged into an inner longitudinal and an outer circular layer
(d) Skeletal muscle arranged into an inner circular and an outer longitudinal layer

Question. Which of the following is a sub-mucosal gland?
(a) Oxyntic glands of stomach
(b) Crypts of Lieberkuhn of small intestine
(c) Brunner’s glands of the duodenum
(d) Goblet cells

Question. Globet cells of intestinal mucosal epithelium secrete
(a) mucus
(b) cholesterol
(c) peptones
(d) bilirubin

Question. Sweetest sugar is
(a) Fructose
(b) Sucrose
(c) Glucose
(d) Lactose

Question. A certain person eats boiled potato; one of the food component in it is
(a) lactose which is indigestible
(b) starch which does not get digested
(c) cellulose which is digested by intestinal cellulos
(d) DNA which gets digested by pancreatic DNAase

Question. The layer of cells that secret enamel of tooth is:
(a) dentoblast
(b) ameloblast
(c) osteoblast
(d) odontoblast

Question. Which of the following terms describe human dentition ?
(a) Pleurodont, Monophyodont, Homodont
(b) Thecodont, Diphyodont, Heterodont
(c) Thecodont, Diphyodont, Homodont
(d) Pleurodont, Diphyodont, Heterodon

Question. Fructose is absorbed into the blood through mucosa cells of intestine by the process called______
(a) Active transport
(b) Facilitated transport
(c) Simple diffusion
(d) Co-transport mechanism

Question. Which one of the following is a matching pair of a substrate and its particular digestive enzyme?
(a) Maltose – Maltase
(b) Lactose – Renin
(c) Starch – Steapsin
(d) Casein – Chymotrypsin

Question. Which one of the following pairs of food components in humans reaches the stomach totally undigested?
(a) Protein and starch
(b) Starch and fat
(c) Fat and cellulose
(d) Starch and cellulose

Question. Where do certain symbiotic microorganisms normally occur in human body?
(a) Caecum
(b) Oral lining and tongue surface
(c) Vermiform appendix and rectum
(d) Duodenum

Question. In the stomach, gastric acid is secreted by the________
(a) Parietal cells
(c) Acidic cells
(b) Peptic cells
(d) Gastrin secreting cells

Question. Cholecystokinin and duocrinin are secreted by
(a) adrenal cortex
(b) thyroid gland
(c) pancreas
(d) intestine

Question. The haemorrhagic disease of new born is caused due to the deficiency of
(a) vitamin-A
(b) vitamin-B1
(c) vitamin-B12
(d) vitamin-K

Question. Bile salts help in__________
(a) Emulsification
(b) Absorption
(c) Mastication
(d) Alkalination

Question. Anaemia disease is caused by deficiency of______
(a) Na
(b) Mg
(c) Ca
(d) Fe

Question. Release of pancreatic juice is stimulated by
(a) enterokinase
(b) cholecystokinin
(c) secretin
(d) Both 2 and ;3

Question. If for some reason our goblet cells are non-functional, this will adversly affect
(a) production of somatostatin
(b) secretion of sebum from the sebaceous glands
(c) maturation of sperms
(d) smooth movement of food down the intestine

Question. Which vitamin should not be stored ?
(a) Calciferol
(b) Niacin
(c) Retinol
(d) Ascorbic acid

Question. Which of the following pairs is characterized by swollen lip, thick, pigmented skin of hands and legs
are irritability_______
(a) Thiamine ——- Beri-beri
(b) Protein ———-Kwashiorkor
(c) Nicotinamide ———- Pellagra
(d) lodine ————- Goitre

Question. The vitamin-C or ascorbic acid prevents
(a) rickets
(b) pellagra
(c) scurvy
(d) antibody synthesis

Question. The vitamin, which is essential for blood clotting is______
(a) Vitamin-A
(b) Vitamin-C
(c) Vitamin-B
(d) Vitamin-K

Question. Protein deficiency leads to_____
(a) Kwashiorkor
(c) Cretinism
(b) Marasmus
(d) Both (a) and (b)

Question. Pancreas produces
(a) three digestive enzymes and one hormone
(b) three digestive enzymes and two hormones
(c) two digestive enzymes and one hormone
(d) three digestive enzymes and no hormone

Question. Wharton’s duct is associated with
(a) sub-lingual salivary duct
(b) parotid salivary duct
(c) sub-maxillary salivary gland
(d) Brunner’s glands

Question. The main function of prolonged chewing is to rupture________
(a) Membranes
(b) Connective tissue
(c) Muscle bundle
(d) Cell wall

Question. Iodine test is used to detect________
(a) Malaria
(b) Typhoid
(c) Carbohydrates
(d) Fats

Question. Hepatic portal system connects_________
(a) Liver to digestive system
(b) Digestive system to liver
(c) Liver to intestine
(d) Only small intestine to liver

Question. What is the function of aminopeptidase?
(a) splits amino acids at amino end of peptide
(b) splits in 2 amino acids
(c) splits amino acid at the carboxyl end of peptide
(d) break peptide bond between amino acid and its neighbor

Question. Which of the following statement is true?
(a) trypsin breaks peptide bond at carboxyl end
(b) lipases include only pancreatic and lingual lipase
(c) Bile salts are necessary of absorption of lipids
(d) elastase enzyme is used for digestion of lipid

Question. Which one of the following pairs of the food components in humans reaches the stomach totally undigested?
(a) Protein and Starch
(b) Starch and fat
(c) fat and cellulose
(d) Starch and cellulose

Question. Cholecystokinin stimulates______
(a) Pancreas
(b) Secrete bile
(c) Gall bladder
(d) None of these

Question. Which of the following hormones stimulates the gastric secretion?
(a) Enterogastrone
(b) CCK-PZ
(c) Gastrin
(d) Villikinin

Question. What is the enzyme that breaks down lactose?
(a) Lipase enzymes
(b) Pepsin
(c) Amylase
(d) Lactase

Question. ________ is a characteristic feature of epithelial cells of the intestine.
(a) Glottis
(b) Pilus
(c) Bolus
(d) Microvilli

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