NEET Biology Chapter Wise Mock Test – Digestion and Absorption
1. Epiglottis is meant for protecting
(a) oesophagus from entry of air
(b) nasal chambers from entry of food
(c) larynx from entry of food
(d) teeth from caries
2. Frenulum is
(a) adenoid present on pharyngeal walls
(b) tonsil found on lateral walls of soft palate
(c) V-shaped sulcus dividing tongue into pharyngeal and oral parts
(d) fold attaching tongue
3. Transverse rugae occur on
(a) hard palate
(b) soft palate
(c) tongue
(d) stomach
4. Glottis is opening in the floor of
(a) diaphragm
(b) buccopharyngeal cavity
(c) trachea
(d) None of these
5. Teeth of most reptiles and amphibians are
(a) acrodon
(b) thecodont
(c) heterodont
(d) diphyodont
6. Bunodont teeth occur in
(a) elephant
(b) sheep
(c) carnivores
(d) humans
7. Teeth of carnivores are
(a) solenodont
(c) lophodont
(b) secodont
(d) pleurodont
8. Odontoblasts produce
(a) dentine
(c) enamel
(b) cement
(d) peridontal membrane
9.Dental formula of a child is
10. Chewing is required for
(a) solubilisation of food
(b) enjoying the taste of food
(c) decreasing surface area of food
(d) increasing surface area of food
11. Crown of teeth is covered by
(a) dentine
(b) enamel
(c) Both (a) and (b)
(d) None of these
12. Dental formula of adult man is
13. Wisdom tooth are
(a) last molars
(b) last premolars
(c) incisors
(d) canines
14. Majority of mammals including human being form two sets of teeth during their life. This type of dentition is called
(a) thecodont
(b) diphyodont
(c) heterodont
(d) monophyodont
15. Cud chewing animals are known as
(a) frugivores
(b) sanguivores
(c) ruminant
(d) cannibals
16. Teeth adapted to shear food are
(a) premolar
(b) canines
(c) incisors
(d) molars
17. Number of teeth, which grow twice is
(a) 8
(b) 14
(c) 12
(d) 20
18. In ruminant stomach, the rumen is the
(a) largest chamber
(b) chamber having cellulose fermenting microorganisms
(c) chamber having villi with cornified surface
(d) All of the above
19. Chamber of ruminant stomach, where food is mixed with gastric juice is
(a) abomasum
(b) omasum
(c) psalterium
(d) rumen
20. Regurgitation of food from stomach is prevented by
(a) pyloric sphincter
(b) cardiac sphincter
(c) circular muscle
(d) muscularis mucosae
21. In an empty stomach, the mucosa is thrown into folds called
(a) rugae
(b) villi
(c) alveoli
(d) None of these
22. HCI is secreted by
(a) zymogen cells
(b) peptic cells
(c) oxyntic cells
(d) None of these
23. Pepsin is secreted by
(a) zymogen cells
(b) epithelial cells
(c) liver
(d) pancreas
24.The chief function of bile is to
(a) regulate the process of digestion
(b) eliminate the waste products
(c) emulsify fats for digestion
(d) digest fat by enzymatic action
25.A disfunction of the parietal cells of gastric glands would result in a decreased production of which of the following?
(a) Mucous
(b) Pepsinogen .
(c) Pepsin
(d) Hydrochloric acid
26.The part of the stomach that meets the oesophagus at the gastroesophageal sphincter is the
(a) fundus
(b) cardia
(c) pylorus
(d) body
27.Duodenum has characteristic Brunner’s glands, which secrete two hormones called
(a) kinase and oestrogen
(b) secretin and cholecystokinin
(c) prolactin and parathormone
(d) oestradion and progesterone
28.Among mammals, a significant role in the digestion of milk played by
(a) rennin
(b) invertase
(c) amylase
(d) intestinal bacteria
29.Insulin is secreted by
(a) a-cells of pancreas
(b) p-cells of pancreas
(c) y-cells of pancreas
(d) acini of pancreas
30.α-cells of pancreas secrete
(a) insulin
(b) glucagon
(c) trypsinogen
(d) amylase
31.Secretin and cholecystokinin are digestive hormones.They are secreted in
(a) oesophagus
(b) ileum
(c) duodenum
(d) pyloric stomach
32.The hormone ‘secretin’ stimulates secretion of
(a) bile juice
(b) pancreatic juice
(c) Both (a) and (b)
(d) gastric juice
33.The enzyme trypsin is found in
(a) pancreatic juice
(b) mucus
(c) saliva
(d) intestinal juice
34.Pancreatic juice contains a protein-splitting enzyme called
(a) trypsin
(b) zymogen
(c) pepsin
(d) amylase
35.Bile can be prevented to pass into duodenum by
(a) pyloric valve
(c) sphincter of Oddi
(b) sphincter of boyden
(d) cardiac sphincter
36.Bile pigments are
(a) haemocyanin
(c) bilirubin
(b) biliverdin
(d) Both (b) and (c)
37.The important salts of bile are
(a) sodium carbonate
(b) sodium glycocholate
(c) sodium taurocholate
(d) All of these
38. The greenish colour of bile is due to
(a) biliverdin and bilirubin
(b) melanin
(c) haematochrome
(d) All of these
39. Cholecystokinin stimulates
(a) pancreas
(b) kidney
(c) gall bladder
(d) liver
40. Trypsinogen is converted into active trypsin by the action of
(a) cholecystokinin
(b) enterocrinin
(c) enterokinase
(d) secretin
41. The duct of gall bladder (cystic duct) along with the hepatic duct from the liver forms
(a) pancreatic duct
(b) common bile duct
(c) common hepatopancreatic duct
(d) None of the above
42. Which of the following statements is incorrect?
(a) Bile helps in emulsification of fats
(b) Bile contains bilirubin, biliverdin, bile salts, cholesterol and phospholipids
(c) Bile contains proteolytic enzymes
(d) Bile activates lipases
43. Formation of gall stones is referred to as
(a) jaundice
(b) cirrhosis
(c) hepatitis
(d) cholelithiasis
44. Which of the following is not a function of saliva?
(a) To initiate protein digestion
(b) To aid in cleansing the teeth
(c) To lubricate the pharynx
(d) To assist in the formation of a bolus
45. Ileum is characterised by
(a) Brunner’s glands and leaf-like villi
(b) Brunner’s glands and club-shaped villi
(c) Club-shaped villi and Peyer’s patches
(d) Peyer’s patches and Brunner’s glands
46. Epithelial cells of the intestine involved in food absorption have on their surface .
(a) pinocytic vesicles .
(b) phagocytic vesicles
(c) zymogen granules
(d) microvilli
47. Paneth cells are found in
(a) crypts of Lieberkuhn
(b) Peyer’s patches
(c) Islet of Langerhans
(d) gastric glands
48. The terminal portion of the small intestine is the
(a) ileum
(b) caecum
(c) duodenum
(d) jejunum
49. The large intestine lacks
(a) goblet cells
(b) epiploic appendages
(c) plicae circulares
(d) haustra
50. A disorder of digestive system associated with liver is
(a) diarrhoea
(b) constipation
(c) jaundice
(d) vomiting
51. A gastrointestinal tumour involving the plicae circulares and villi might interfere with
(a) deglutition
(b) absorption
(c) peristal
(d) defecation
52. If an incision had to be made in the small intestine to remove an obstruction, which tunic would be cut first?
(a) Muscularis
(b) Mucosa
(c) Submucosa
(d) Adventitia
53. The hepatic flexure of the large intestine occurs between the
(a) transverse colon and descending colon
(b) caecum and ascending colon
(c) ascending colon and transverse colon
(d) descending colon and rectum
54. Obstruction of the common bile duct by gall stones would most likely affect the digestion of
(a) carbohydrates
(b) fats
(c) proteins
(d) nucleic acids
55. Pancreatic amylase is related to the digestion of
(a) fats
(b) carbohydrates
(c) proteins
(d) None of these
56. Select the incorrect statement about intestinal villi.
(a) They possess microvilli
(b) They increase the surface area
(c) They are supplied with capillaries and the lacteal vessels
(d) They only participate in digestion of fats
57. The small intestine is held to the posterior abdominal wall by the
(a) mesentery
(b) falciform ligament
(c) greater omentum
(d) lesser omentum
58. Identify the labels A-E in the given diagram showing structure of stomach.
59. Intestinal villi
I. provide large surface area for absorption.
II. contain blood vessels and lacteals.
III. distribute digestive enzymes uniformly.
IV. stimulate peristalsis.
V. secrete mucus.
Select the correct option.
(a) I and III
(b) I, III and V
(c) I and II
(d) II, IV and V
60. Refer to the given figure of gastric gland and select the incorrect statements.
I. A is oxyntic cell which secretes hydrochloric acid.
II. C are chief cells which secrete pepsin.
III. B are mucous cells which secrete mucus.
IV. D is argentaffin cell which produce insulin.
(a) II and III
(b) I and IV
(c) I and III
(d) I, II, III and IV
61. The following is a scheme showing the fate of . carbohydrates during digestion in the human alimentary canal. Identify the enzymes acting at stages indicated as A, B, C and D. Choose the correct option from those given below:
(a) A-Amylase, B-Maltase, C-Lactase, D-Invertase
(b) A-Amylase, B-Maltase, C-Invertase, D-Lactase
(c) A-Amylase, B-lnvertase,C-Maltase, D-Lactase
(d) A-Amylase, B-Lactase, C-Maltase, D-Invertase
62. Match the following columns.
(a) (i)-1-IV, (ii)-3-l, (iii)-2-lll, (iv)-4-ll
(b) (i)-3-IV, (ii)-4-l, (iii)-l-lll, (iv)-2-ll
(c) (i)-2-IV, (ii)-2-l, (iii)-4-ll, (iv)-1-lll
(d) (i)-1 -IV, (ii)-2-l, (iii)-3-lll, (iv)-4-ll
63. Which one of the following is the correct matching of the site of action on the given substrate, the enzyme acting upon it and the end-product?
64. Categorise the statements given below as true and false and select the correct option.
I. Bile salts contain sodium, carbonate, sodium glycocholate and sodium taurocholate.
II. Intestinal juice does not contain any lipase or nucleotidases.
III. Goblet cells secrete mucus in the digestive tract.
IV. Liver synthesises urea from ammonia and carbon dioxide.
V. Sphincter of Oddi surrounds the opening of bile duct before it is joined with pancreatic duct.
VI. Sublingul ducts, called Wharton’s duct open under
65. In the given diagram of TS of gut, identify A-D and select the correct statements.
I. A is also known as the ‘policeman of stomach’.
II. B contains network of nerve cells and sympathetic nerve fibres called Auerbach’s plexus.
III. C is richly supplied with blood and lymphatic vessels.
IV. D forms gastric glands in stomach.
(a) I, II and III
(b) I, III and IV
(c) II and IV
(d) II, III and IV
66. A person suffering from the deficiency of the visual pigment rhodopsin is advised to take more of
(a) radish and potato
(b) apple and grapes
(c) carrot and ripe papaya
(d) guava and ripe banana
67. Intrinsic factor is required for
(a) production of gastric juice
(b) absorption of B12
(c) peristalsis
(d) feeling of hunger
68. Continued consumption of a diet rich in butter, red meat and eggs for a long period may lead to
(a) vitamin-A toxicity
(b) kidney stones
(c) hypercholesterolemia
(d) urine laden with ketone bodies
69. Phagocytic cells lining blood sinuses of liver are known as
(a) Enterochromaffin cells
(b) Kupfer’s cells
(c) oxyntic cells
(d) zymogen cells
70. A patient is generally advised to specially, consumemore meat, lentils, milk and eggs in diet only when he suffers from
(a) kwashiorkor
(b) rickets
(c) anaemia
(d) scurvy
71. Which group of three of the following five statements (l-V) contains all three correct statements regarding beri-beri?
I. A crippling disease prevalent among the native population of sub-Sahara Africa. –
II. A deficiency disease caused by lack of thiamine (vitamin-B.,).
III. A nutritional disorder in infants and young children, when the diet is persistently deficient in essential protein.
IV. Occurs in those countries, where the staple diet is polished rice.
V. The symptoms are pain from neuritis, paralysis, muscle wasting, progressive oedema, mental deterioration, and finally heart failure.
(a) I, II and IV
(b) I, III and V
(c) I, III and V
(d) II, IV and V
72. The daily dietary requirement of a moderately active adult individual is approximately
(a) 1000 kcal
(b) 4000 kcal
(c) 8000 kcal
(d) 2500 kcal
73. Amylase converts starch into
(a) fructose
(b) glucose
(c) maltose
(d) lactose
74. Match the following columns.
Codes
A B C D A B C D
(a) 12 3 4 (b) 3 1 4 2
(c) 4 3 2 1 (d) 2 4 1 3
75. Kwashiorkor and beri-beri are
(a) communicable diseases
(b) infectious diseases
(c) deficiency diseases
(d) None of these
76. In an experiment, freshly hatched larvae of an insect (khapra beetle) were reared on a basal diet (complete diet without cholesterol) with increasing amount of cholesterol. Result obtained are shown in the graph given.
The graph indicates
(a) cholesterol is an essential dietary requirement of khapra beetle
(b) growth of khapra beetle is directly proportional to cholesterol concentration
(c) cholesterol concentration of 2 pg/g diet is the optimum level
(d) growth of khapra beetle is inhibited, when cholesterol concentration exceeds 5 pg/g diet
77. Which of the following is not a”mdjor gastrointestinal hormone?
(a) Epinephrine
(b) Secretin
(c) Gastrin
(d) Cholecystokinin
78. When the body is engaged in long-duration low-intensity exercise, the principal energy source is
(a) carbohydrates
(b) fats
(c) proteins
(d) glycogen
79. A patient, who has undergone a gastrectomy (removal of the stomach) may suffer from
(a) cirrhosis
(b) pernicious anaemia
(c) gastric ulcer
(d) inability to digest fats
80. Amylase in saliva initiates digestion of
(a) lipids
(b) proteins
(c) carbohydrates
(d) fats
81. Which one of the following is the correct matching of a vitamin, its nature and its deficiency disease?
(a) Vitamin-A—Fat soluble—Nightblindness
(b) Vitamin-K—Fat soluble—Beri-beri
(c) Vitamin-A—Fat soluble—Beri-beri
(d) Vitamin-K—Water soluble—Pellagra
82. Which of the following is not an energy source for cells?
(a) Glucose
(b) Protein
(c) Fats
(d) Vitamins
Direction (Q. Nos. 83-86) In each of the following questions a statement of Assertion is given followed by a corresponding statement of Reason just below it. Of the statements, mark the correct answer as
(a) If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
(b) If both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
(c) If Assertion is true, but Reason is false.
(d) If both Assertion and Reason are false.
83. Assertion In alcoholic drink, the alcohol is converted into glucose in liver.
Reason Liver cells are able to produce glucose from alcohol by back fermentations.
84. Assertion Thick layers of muscles are present in the wall of alimentary canal.
Reason These muscles help in the mixing of food . materials with the enzymes coming from different glands in the alimentary canal.
85. Assertion The stomach mucosa is not digested by its own secretions.
Reason Mucin coats the mucosa of stomach.
86. Assertion Saliva is a secretion of salivary glands.
Reason Saliva is a mixture of water and electrolytes, derived from blood plasma.
87. Match the following columns.
Codes
ABC D ABC D
(a) 1 2 3 5 (b) 2 1 3 4
(c) 4 5 1 2 (d) 1 2 3 4
88. Match the following columns.
Codes
ABCD ABCD
(a) 1 2 3 4 (b) 4 1 2 3
(c) 2 3 1 4 (d) 5 4 2 1
89. Which of the following statements is not correct?
(a) Brunner’s glands are present in the submucosa of . stomach and secrete pepsinogen
(b) Goblet cells are present in the mucosa of intestine and- secrete mucus
(c) Oxyntic cells are present in the mucosa of stomach and secrete HCI.
(d) Acini are present in the pancreas and secrete carboxypeptidase
90. Gastric juice of infants contains
(a) maltase, pepsinogen, rennin
(b) nuclease, pepsinogen, lipase
(c) pepsinogen, lipase, rennin
(d) amylase, rennin, pepsinogen
91. The initial step in the digestion of milk in humans is carried out by?
(a) Lipase
(b) Trypsin
(c) Rennin
(d) Pepsin
92. 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
93. Select the correct match of the digested products in
humans given in column I with their absorption site and mechanism in column II
94.Brunner’s gland is present in
(a) liver
(b) duodenum
(c) oesophagus
(d) stomach
95. 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
96. Which type of teeth are found in humans?
(a) Acrodont
(b) Thecodont
(c) Polyphyodont
(d) Monophyodont
97. The pH of stomach is 1.6, then which enzyme will digest protein?
(a) Trypsin
(b) Pepsin
(c) Amylase
(d) Erypsin
98. Vitamin-B! is present in one of these molecules
(a) TPP
(b) FMN
(c) NAD
(d) ATP
99. Which of the following is an essential fatty acid in mammals?
(a) Stearic acid
(b) Acetic acid
(c) Palmitic acid
(d) Gamma linolenic acid
100. Which of the following enzymes carries out the initial step in the digestion of milk in humans?
(a) Rennin
(b) Lipase
(c) Trypsin
(d) Pepsin
101. Match the following columns.
Codes
A B C D E ABODE
(a) 3 2 4 1 5 (b) 2 5 1 4 3
(c) 3 4 15 2 (d) 4 3 1 2 5
Answers :