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Worksheet for Class 11 Biology Chapter 16 Digestion and Absorption
Class 11 Biology students should refer to the following printable worksheet in Pdf for Chapter 16 Digestion and Absorption in Class 11. This test paper with questions and answers for Class 11 will be very useful for exams and help you to score good marks
Class 11 Biology Worksheet for Chapter 16 Digestion and Absorption
CLASS XI DIGESTION AND ABSORPTION ENRICHMENT WORKSHEET
1. Enumerate the functions of saliva.
2. Describe the digestion of milk in an infant
3. How are micelles and chylomicrons different?
4. Name the source of enterokinase. Mention its function.
5. Write the function of cholecystokinin?
6. When the stomach wall contracts, the food does not come back into the oesophagus. Give reason.
7. You have eaten daal at lunch. Make a list of enzymes it will be acted upon and changes it will undergo before being absorbed in the small intestine.
8. How would it affect digestion, if there is a blockage in the bile duct?
9. Why are the intestinal proteases normally secreted in an inactive form?
10. Salivary amylase in the food bolus does not continue to function in the stomach. Why?
Important Questions for NCERT Class 11 Biology Digestion and Absorption
Ques. Where is protein digestion accomplished?
(a) Stomach (b) Ileum
(c) Rectum (d) Duodenum
Answer: B
Ques. In man the zymogen or chief cells are mainly found in
(a) cardiac part of stomach
(b) pyloric part of stomach
(c) duodenum
(d) fundic part of stomach.
Answer: D
Ques. Emulsification of fat is carried out by
(a) bile pigments
(b) bile salts
(c) HCl
(d) pancreatic juice.
Answer: B
Ques. Release of pancreatic juice is stimulated by
(a) enterokinase (b) cholecystokinin
(c) trypsinogen (d) secretin.
Answer: B
Ques. Match the items given in column I with those in column II and choose the correct option.
Column I Column II
A. Rennin (i) Vitamin B12
B. Enterokinase (ii) Facilitated transport
C. Oxyntic cells (iii) Milk proteins
D. Fructose (iv) Trypsinogen
(a) A-iii, B-iv, C-ii, D-i
(b) A-iv, B-iii, C-i, D-ii
(c) A-iv, B-iii, C-ii, D-i
(d) A-iii, B-iv, C-i, D-ii
Answer: D
Ques. 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.
Answer: B
Ques. Select the correct match of the digested products in humans given in column I with their absorption site and mechanism in column II.
Column I Column II
(a) Glycerol, fatty acids Duodenum, move as chylomicrons
(b) Cholesterol, maltose Large intestine, active absorption
(c) Glycine, glucose Small intestine, active absorption
(d) Fructose, Na+ Small intestine, passive absorption
Answer: C
Ques. Carrier ions like Na+ facilitate the absorption of substances like
(a) amino acids and glucose
(b) glucose and fatty acids
(c) fatty acids and glycerol
(d) fructose and some amino acids.
Answer: A
Ques. A young infant may be feeding entirely on mother’s milk which is white in colour but the stools which the infant passes out is quite yellowish. What is this yellow colour due to?
(a) Bile pigments passed through bile juice
(b) Undigested milk protein casein
(c) Pancreatic juice poured into duodenum
(d) Intestinal juice
Answer: A
Ques. Which one of the following statements is true regarding digestion and absorption of food in humans?
(a) Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like Na+.
(b) Chylomicrons are small lipoprotein particles that are transported from intestine into blood capillaries.
(c) About 60% of starch is hydrolysed by salivary amylase in our mouth.
(d) Oxyntic cells in our stomach secrete the proenzyme pepsinogen.
Answer: A
Ques. Epithelial cells of the intestine involved in food absorption have on their surface
(a) pinocytic vesicles
(b) microvilli
(c) zymogen granules
(d) phagocytic vesicles.
Answer: B
Ques. During prolonged fastings, in what sequence are the following organic compounds used up by the body ?
(a) First carbohydrates, next fats and lastly proteins
(b) First fats, next carbohydrates and lastly proteins
(c) First carbohydrates, next proteins and lastly lipids
(d) First proteins, next lipids and lastly carbohydrates
Answer: A
Ques. Anxiety and eating spicy food together in an otherwise normal human, may lead to
(a) indigestion (b) jaundice
(c) diarrhoea (d) vomiting.
Answer: A
Ques. Jaundice is a disorder of
(a) excretory system (b) skin and eyes
(c) digestive system (d) circulatoy system.
Answer: C
Ques. When breast feeding is replaced by less nutritive food low in proteins and calories; the infants below the age of one year are likely to suffer from
(a) rickets (b) kwashiorkor
(c) pellagra (d) marasmus.
Answer: D
Ques. Which one of the following is a fat-soluble vitaminand its related deficiency disease?
(a) Retinol - Xerophthalmia
(b) Cobalamine - Beri-beri
(c) Calciferol - Pellagra
(d) Ascorbic acid - Scurvy
Answer: A
Ques. Examination of blood of a person suspected of having anaemia shows large, immature, nucleated erythrocytes without haemoglobin. Supplementing his diet with which of the following is likely to alleviate his symptoms?
(a) Iron compounds
(b) Thiamine
(c) Folic acid and cobalamine
(d) Riboflavin
Answer: C
Ques. A patient is generally advised to specially consume more meat, lentils, milk and eggs in diet only when he suffers from
(a) scurvy (b) kwashiorkor
(c) rickets (d) anaemia.
Answer: B
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Worksheet for CBSE Biology Class 11 Chapter 16 Digestion and Absorption
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