Explore topic-wise InterviewSolutions in .

This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.

51.

The hard chewing surface of the teeth is ________(a) enamel(b) tongue(c) frenulum(d) papillaeThis question was addressed to me in examination.I'd like to ask this question from Digestive System topic in section Digestion and Absorption of Biology – Class 11

Answer»

The CORRECT choice is (a) enamel

To explain: The hard chewing surface of the TEETH is called enamel. Tongue is the freely movable muscular ORGAN ATTACHED to the floor of oral cavity. Frenulum is the organ VIA with tongue is attached in the oral cavity. Papillae are small projections on the upper surface of tongue.

52.

Which of the following is not a major component of our food?(a) Carbohydrates(b) Proteins(c) Fats(d) MineralsI have been asked this question by my college director while I was bunking the class.The query is from Digestive System in portion Digestion and Absorption of Biology – Class 11

Answer»

Correct option is (d) MINERALS

Explanation: Minerals doesn’t belong to the category of major COMPONENTS of food. Carbohydrates are most required by the body to meet the energy REQUIREMENTS. Proteins are next important for meet growth requirements of the body. Fats are required by the body for INSULATION of organs as well as to energy requirements in absence of carbohydrates in the diet.

53.

Megaloblastic anaemia is caused by folic acid deficiency.(a) True(b) FalseThis question was posed to me during an interview.My question comes from Disorders in Digestive System topic in section Digestion and Absorption of Biology – Class 11

Answer»

Correct choice is (a) True

The explanation is: Folic acid and vitamin B12 deficiency cause megaloblastic anaemia where RBCs become LARGER than NORMAL. ALSO RBCs are not produced in ENOUGH quantity.

54.

Which of the following vitamin cannot show hypervitaminosis?(a) Vitamin B(b) Vitamin A(c) Vitamin D(d) Vitamin EI had been asked this question in examination.My doubt is from Disorders in Digestive System topic in division Digestion and Absorption of Biology – Class 11

Answer»

Correct answer is (a) Vitamin B

Explanation: Hypervitaminosis is the tendency of the vitamin to accumulate in the BODY. This property is SHOWN by the water-insoluble or fat-soluble vitamins which include vitamin A, D, E and K.

55.

Which of the following makes the hard chewing surface of the teeth?(a) Enamel(b) Dentine(c) Root canal(d) Pulp cavityThis question was addressed to me in my homework.I would like to ask this question from Digestive System in division Digestion and Absorption of Biology – Class 11

Answer»

Right answer is (a) ENAMEL

For explanation: The HARD CHEWING surface of the teeth is made up of enamel that helps in the mastication of food. Heterodont type of dentition is present in human beings.

56.

Which of the following is a symptom of jaundice?(a) Bile salts deposit in the liver(b) Bile salts deposit in eyes(c) Bile pigments deposit in the liver(d) Bile pigments deposit in the eyesThis question was addressed to me by my school teacher while I was bunking the class.My query is from Disorders in Digestive System in division Digestion and Absorption of Biology – Class 11

Answer»

Correct option is (d) Bile pigments deposit in the eyes

The explanation: In jaundice, the liver is affected, SKIN and eyes turn YELLOW due to the deposition of bile pigments particularly bilirubin. It is a WASTE material that remains in the bloodstream after iron is REMOVED from the blood.

57.

Which of the following is not a cause for indigestion?(a) Overeating(b) Food poisoning(c) Anxiety(d) Adequate enzyme secretionThis question was posed to me in an interview for internship.My query is from Disorders in Digestive System topic in portion Digestion and Absorption of Biology – Class 11

Answer»

Correct option is (d) Adequate enzyme SECRETION

Explanation: In indigestion, the food is not PROPERLY digested which leads to a FEELING of fullness. The causes of indigestion are inadequate enzyme secretion, anxiety, food poisoning, OVEREATING, and spicy food.

58.

In which of the following countries dietary deficiencies are not common?(a) European countries(b) South and South-east Asia(c) South America(d) West and Central AfricaThis question was posed to me in an interview.The above asked question is from Disorders in Digestive System topic in portion Digestion and Absorption of Biology – Class 11

Answer» RIGHT choice is (a) European countries

Easy explanation: Dietary deficiencies of PROTEINS and total food calories are WIDESPREAD in many underdeveloped countries of SOUTH and South-east Asia, South AMERICA, and West and Central Africa.
59.

What initiates a signal for defaecation?(a) Faeces in the colon(b) Faeces in the rectum(c) Faeces in the caecum(d) Faeces in the ileumI have been asked this question in unit test.This interesting question is from Disorders in Digestive System topic in division Digestion and Absorption of Biology – Class 11

Answer»

The correct choice is (b) Faeces in the rectum

For explanation I would say: The DIGESTIVE wastes, solidified into coherent faeces in the rectum initiate a neural reflex causing an urge or desire for its REMOVAL. Defaecation is a voluntary process and is CARRIED out by MASS peristaltic movements.

60.

No significant digestive activity occurs in the large intestine.(a) True(b) FalseI had been asked this question by my college professor while I was bunking the class.The above asked question is from Absorption of Digested Products in division Digestion and Absorption of Biology – Class 11

Answer»

The CORRECT choice is (a) True

Easy explanation: No significant DIGESTIVE activity occurs in the large intestine. The only known function of the large intestine is absorption of water, minerals and CERTAIN drugs. The inner layer of large intestine also SECRETES some amount of mucus which helps to bind the WASTE particles together.

61.

Where is the vomiting centre present in our bodies?(a) Medulla(b) Pons(c) Cerebellum(d) HypothalamusI have been asked this question in exam.The question is from Disorders in Digestive System in chapter Digestion and Absorption of Biology – Class 11

Answer»

The correct OPTION is (a) MEDULLA

The best I can EXPLAIN: VOMITING is the ejection of stomach CONTENTS through the mouth. This reflex action is controlled by the vomiting centre in the medulla. A feeling of nausea precedes vomiting.

62.

Where does the breakdown of bio-macromolecules take place?(a) Ileum(b) Jejunum(c) Duodenum(d) PancreasThis question was posed to me in an international level competition.The origin of the question is Absorption of Digested Products in portion Digestion and Absorption of Biology – Class 11

Answer»

Right option is (C) Duodenum

Explanation: The breakdown of bio-macromolecules occurs in the duodenum REGION of the small intestine. The simple SUBSTANCES thus FORMED are absorbed in the jejunum and ileum regions of the small intestine.

63.

Which of the following is not a major component of the food?(a) Carbohydrates(b) Proteins(c) Vitamins(d) FatsI have been asked this question in exam.I would like to ask this question from Digestive System topic in division Digestion and Absorption of Biology – Class 11

Answer»

The CORRECT answer is (c) Vitamins

To explain I would SAY: The major components of our FOOD are carbohydrates, proteins and fats. Vitamins and MINERALS are also required in small quantities in our DIET.

64.

What is deglutition?(a) Mastication of food(b) Secretion of saliva(c) Swallowing of food(d) Mixing of foodThe question was posed to me during an online interview.My question is from Digestion of Food-2 in portion Digestion and Absorption of Biology – Class 11

Answer»

The correct OPTION is (c) Swallowing of food

The explanation: Deglutition refers to swallowing. Mucus in saliva helps in lubricating and ADHERING the MASTICATED food particles into a bolus. The bolus is then CONVEYED into the pharynx and then into the oesophagus by swallowing or deglutition.

65.

Which of the following is not a source of vitamin C?(a) Amla(b) Gooseberry(c) Orange(d) CarrotI have been asked this question in a national level competition.I'm obligated to ask this question of Disorders in Digestive System in portion Digestion and Absorption of Biology – Class 11

Answer»

The correct option is (d) Carrot

The BEST explanation: Citrus fruits are the source of VITAMIN C. It is also KNOWN as ascorbic acid and antiviral vitamin. Vitamin C is the most readily excreted vitamin through urine. It also acts as an antioxidant.

66.

Pellagra is caused due to the deficiency of which of the following vitamins?(a) Vitamin A(b) Vitamin B12(c) Vitamin B3(d) Vitamin CI have been asked this question in homework.Query is from Disorders in Digestive System topic in chapter Digestion and Absorption of Biology – Class 11

Answer»

Right option is (c) Vitamin B3

To EXPLAIN: Pellagra is caused due to the DEFICIENCY of vitamin B3 which is ALSO known as Niacin or Nicotinamide. Pellagra is CHARACTERIZED by dementia, dermatitis and diarrhoea.

67.

Where do most of the water is absorbed in our body?(a) Stomach(b) Buccal cavity(c) Small intestine(d) Large intestineThis question was addressed to me in a job interview.Origin of the question is Disorders in Digestive System in division Digestion and Absorption of Biology – Class 11

Answer» CORRECT choice is (d) Large intestine

To explain I would say: Most of the water is absorbed in the large intestine. The undigested FOOD becomes semi-solid and then enters into the rectum, ANAL canal, and is FINALLY egested out through the anus.
68.

In constipation, there is increased liquidity of the faecal matter.(a) True(b) FalseThis question was addressed to me during an interview.I want to ask this question from Disorders in Digestive System topic in division Digestion and Absorption of Biology – Class 11

Answer»

The correct choice is (b) False

To explain: In CONSTIPATION, the FAECES are RETAINED within the colon as the BOWEL movement occurs irregularly. Increased fluidity of the faecal matter is the symptom of DIARRHOEA.

69.

What per cent of starch is hydrolysed by salivary amylase?(a) 30 %(b) 70%(c) 80%(d) 95%The question was asked during a job interview.This key question is from Digestion of Food-2 topic in chapter Digestion and Absorption of Biology – Class 11

Answer»

The CORRECT answer is (a) 30 %

To explain I WOULD say: In the BUCCAL cavity, about 30% of starch is hydrolysed by salivary amylase or carbohydrate splitting enzyme which acts at a pH of 6.8 and CONVERTS starch into a disaccharide- MALTOSE.

70.

Bile protects the intestinal mucosa from acid and alkaline medium.(a) True(b) FalseThe question was asked by my school principal while I was bunking the class.Origin of the question is Absorption of Digested Products in section Digestion and Absorption of Biology – Class 11

Answer»

Right option is (B) False

Explanation: The MUCUS along with the bicarbonates released from the pancreas protects the intestinal mucosa from acid as well as PROVIDE an alkaline MEDIUM for enzymatic activities. Submucosal glands also HELP in this.

71.

4.5 pH is optimal for the action of pepsin.(a) True(b) FalseI have been asked this question in class test.Origin of the question is Digestion of Food-2 in chapter Digestion and Absorption of Biology – Class 11

Answer»

Correct choice is (b) False

To explain I WOULD say: Hydrochloric acid provides the ACIDIC pH 1.8 which is optimal for the action of pepsins. The mucus and BICARBONATES present in the gastric juice play an important ROLE in the lubrication and protection of the MUCOSAL epithelium of the stomach.

72.

Muscularis layer is made up of which of the following?(a) Cardiac muscles(b) Skeletal muscles(c) Smooth muscles(d) Connective tissue sheathThis question was posed to me in an online interview.My question comes from Digestion of Food-1 in division Digestion and Absorption of Biology – Class 11

Answer» CORRECT option is (c) Smooth muscles

The best I can explain: MUSCULARIS layer is formed by smooth muscles which are usually ARRANGED into an inner circular and an outer longitudinal layer. An oblique muscle layer may be PRESENT in some regions.
73.

How many different types of teeth are present in humans?(a) Two(b) Three(c) Four(d) FiveI had been asked this question at a job interview.Question is taken from Digestive System topic in division Digestion and Absorption of Biology – Class 11

Answer»

The correct OPTION is (c) Four

To explain: There are 4 DIFFERENT types of teeth present in a human being which include- INCISORS, canines, pre-molars and molars. The last set of molars or the WISDOM teeth are vestigial in human BEINGS.

74.

Which type of micro-organisms does caecum hosts?(a) Symbiotic(b) Saprophytic(c) Detrivorous(d) ParasiticI have been asked this question in an internship interview.This key question is from Digestion of Food-1 topic in division Digestion and Absorption of Biology – Class 11

Answer»

Right option is (a) Symbiotic

The explanation: Large intestine consists of the CAECUM, COLON, and rectum. The ILEUM is a part of the small intestine which opens into the large intestine. The caecum is a blind sac which HOSTS some symbiotic micro-organisms.

75.

In which layer of the alimentary canal, goblet cells are present?(a) Serosa(b) Mucosa(c) Muscularis(d) Sub-mucosaThis question was posed to me during an online interview.I'd like to ask this question from Digestion of Food-1 in chapter Digestion and Absorption of Biology – Class 11

Answer»

The CORRECT answer is (b) Mucosa

The best I can explain: Mucosal epithelium has GOBLET cells which secrete MUCUS that helps in LUBRICATION. All four layers show modifications in different PARTS of the alimentary canal.

76.

What does food provide for us?(a) Energy and water(b) Energy and organic material(c) Energy and nitrogen(d) Only energyI got this question during a job interview.Query is from Digestive System in portion Digestion and Absorption of Biology – Class 11

Answer»

The correct option is (B) Energy and organic material

Explanation: Food is one of the basic requirements of all living organisms. Food provides energy and organic materials for growth and repair of TISSUES. The WATER we TAKE in plays an IMPORTANT role in metabolic processes.

77.

Which of the following is not a symptom of kwashiorkor?(a) Extensive oedema(b) Emaciation of the body(c) Failure of growth and brain development(d) Wasting of musclesThe question was asked in exam.Question is taken from Disorders in Digestive System topic in portion Digestion and Absorption of Biology – Class 11

Answer»

Correct choice is (B) Emaciation of the body

The explanation: Kwashiorkor SHOWS a wasting of muscles, thinning of limbs, failure of growth, and brain DEVELOPMENT. But unlike marasmus, some fat is still left under the SKIN, moreover, extensive oedema and swelling of body parts are seen.

78.

Which of the following is not the secretion released into the small intestine?(a) Bile(b) Pancreatic juice(c) Salivary amylase(d) Intestinal juiceI have been asked this question in examination.Question is from Digestion of Food-2 topic in chapter Digestion and Absorption of Biology – Class 11

Answer» CORRECT option is (C) Salivary amylase

The explanation: The BILE, PANCREATIC JUICE and the intestinal juice are the secretions released into the small intestine. Pancreatic juice is the secretions released through the hepato-pancreatic duct.
79.

Which of the following types of cells is not present in the stomach?(a) Neck cells(b) Chief cells(c) Parietal cells(d) Paneth cellsI had been asked this question in an online interview.The doubt is from Digestion of Food-2 topic in division Digestion and Absorption of Biology – Class 11

Answer»

Right choice is (d) Paneth cells

The explanation is: The mucosa of the stomach has gastric GLANDS. Gastric glands have three major TYPES of cells namely:

i. NECK cells

ii. Peptic or chief cells

iii. PARIETAL or OXYNTIC cells.

80.

Which portion of stomach opens into small intestine?(a) Cardiac portion(b) Fundic portion(c) Pyloric portion(d) Body portionThis question was posed to me in an internship interview.My question comes from Digestive System topic in division Digestion and Absorption of Biology – Class 11

Answer»

Correct answer is (c) Pyloric portion

Explanation: Stomach is J shaped bag LIKE structure which temporarily stores FOOD. It is divided into Fundus, Cardiac, Body and Pyloric regions. The pyloric region OPENS into the small INTESTINE via Pyloric sphincter.

81.

Vermiform appendix arises from which part of the large intestine?(a) Transverse colon(b) Sigmoid colon(c) Caecum(d) RectumThis question was posed to me during an interview.The query is from Digestion of Food-1 topic in division Digestion and Absorption of Biology – Class 11

Answer» RIGHT choice is (c) CAECUM

The best EXPLANATION: Vermiform appendix is a narrow finger-like tubular PROJECTION that arises from the caecum of the LARGE intestine. The vermiform appendix is a vestigial organ in the human body.
82.

According to food habit, what kind of teeth are present in human beings?(a) Bunodont(b) Secodont(c) Selenodont(d) LophodontI have been asked this question in quiz.I would like to ask this question from Digestive System in portion Digestion and Absorption of Biology – Class 11

Answer»

Correct choice is (a) Bunodont

Easy explanation: In human beings, cusps of TEETH are SMALL and blunt. These kid of teeth are called as bunodont teeth. SECODONT, SELENODONT and lophodont teeth are present in carnivores, CATTLE and elephant respectively.

83.

Which of the following deficiency leads to Kwashiorkor?(a) Fats(b) Protein(c) Vitamin(d) WaterThis question was addressed to me in a job interview.Query is from Disorders in Digestive System in division Digestion and Absorption of Biology – Class 11

Answer»

The correct choice is (b) Protein

Explanation: KWASHIORKOR is PRODUCED by protein deficiency unaccompanied by calorie deficiency. It results from the REPLACEMENT of mother’s milk by a HIGH calorie-low protein diet in a child more than one year in age.

84.

The process of conversion of complex food substances into simple absorbable forms _________(a) Digestion(b) Excretion(c) Respiration(d) CirculationThe question was asked during an internship interview.This intriguing question originated from Digestive System in portion Digestion and Absorption of Biology – Class 11

Answer»

Correct option is (a) Digestion

Best explanation: Digestion is the process of conversion of food substrates into digestible form. Excretion is the process of release of undigested and REQUIRED wastes of the body. Respiration is the process of exchange of O2 from ATMOSPHERE with CO2 produced by the cells. CIRCULATION is the process of transport of CONNECTIVE tissues blood in the body and the ELEMENTS it carries.

85.

Which is the principal organ for absorption?(a) Mouth(b) Stomach(c) Small intestine(d) Large intestineI have been asked this question by my school principal while I was bunking the class.This key question is from Disorders in Digestive System in division Digestion and Absorption of Biology – Class 11

Answer»

Correct ANSWER is (c) Small intestine

The EXPLANATION: The principal organ for the absorption of nutrients in the small intestine. The digestion is COMPLETED here and the final products of digestion are ABSORBED through the mucosa into the bloodstream and the lymph.

86.

Which of the following is an active enzyme in the pancreas?(a) Trypsinogen(b) Procarboxypeptidase(c) Chymotrypsinogen(d) NucleasesThis question was posed to me in an international level competition.I'm obligated to ask this question of Absorption of Digested Products topic in portion Digestion and Absorption of Biology – Class 11

Answer»

The correct answer is (d) Nucleases

The best explanation: The inactive ENZYMES of the pancreas are TRYPSINOGEN, procarboxypeptidase and chymotrypsinogen. The other PANCREATIC enzymes include AMYLASES, lipases and nucleases.

87.

What are peptones?(a) Partially hydrolysed proteins(b) Completely hydrolysed proteins(c) Incompletely ligase proteins(d) Hydrolysed proteinsI have been asked this question by my school teacher while I was bunking the class.My doubt is from Absorption of Digested Products topic in portion Digestion and Absorption of Biology – Class 11

Answer»

Correct option is (a) Partially hydrolysed proteins

For explanation: Peptones are partially hydrolysed proteins. Proteins, PROTEOSES and peptones in the CHYME after reaching the small intestine are ACTED UPON by the PROTEOLYTIC enzymes of the pancreatic juice.

88.

Where are the faeces stored till defaecation?(a) Caecum(b) Colon(c) Anus(d) RectumThis question was posed to me during an interview for a job.The question is from Absorption of Digested Products in portion Digestion and Absorption of Biology – Class 11

Answer»

Correct choice is (d) Rectum

Easiest explanation: The FAECES are temporarily stored in the rectum till DEFAECATION. The activities of the gastrointestinal tract are under neural and hormonal control for PROPER COORDINATION of different parts.

89.

Innermost layer mucosa forms rugae in the stomach.(a) True(b) FalseThis question was addressed to me in an interview for internship.This interesting question is from Digestion of Food-1 topic in section Digestion and Absorption of Biology – Class 11

Answer»

Right ANSWER is (a) True

Explanation: The mucosal layer of the alimentary FORMS IRREGULAR folds or rugae in the STOMACH and small finger-like projections-VILLI in the small intestine. The cells lining the villi produce numerous microscopic projections called microvilli giving a brush bordered appearance.

90.

The colon is divided into how many parts?(a) One(b) Three(c) Four(d) FiveThis question was addressed to me during an interview for a job.The query is from Digestion of Food-1 in portion Digestion and Absorption of Biology – Class 11

Answer»

Right answer is (c) Four

Explanation: COLON is divided into four PARTS- an ascending, a transverse, descending part, and a SIGMOID colon. The descending part OPENS into the rectum which opens out through the anus.

91.

The oral cavity leads into the trachea.(a) True(b) FalseThis question was posed to me during an online exam.Origin of the question is Digestive System in division Digestion and Absorption of Biology – Class 11

Answer»

Right choice is (b) False

The best explanation: The oral CAVITY leads into a short pharynx which serves as a common PASSAGE for food and air. Arrangement of tonsils in a RING-like manner in the pharynx is called as WALDEYER’s ring.