CBSE Class 11 Biology Digestion And Absorption Enrichment Worksheet Set B

CLASS XI

BIOLOGY

DIGESTION & ABSORPTION

Q1. What are the major nutrients of our food?

Q2. Give functions of food.

Q3. List few points of digestive system.

Q4. Draw labeled diagram of human digestive system & describe various parts of the alimentary canal.

Q5. With help of labeled diagrams of:- (a) T.S. of Alimentary Canal (stomach) (b) T.S. of Alimentary Canal (Intestinal region) (c) Villi Describe the histology of alimentary canal.

Q6. Write dental formula of man.

Q7. What are the functions of premolars, molars, incisors & canines in human?

Q8. What do you understand by terms heterodont, disphyodont.

Q9 (a) How many pairs of salivary glands are present in man? (b) What is the composition of saliva?

Q10 (a) Name a digestive gland which also produce hormones.

      (b) Name the hormones secreted by exocrine past of pancreas.

      (c) What is sphincter of oddi? Give its function.

Q11 (a) Name the largest gland of our body ? (b) What is Glisson’s capsule?

      (c) Draw a labeled diagram showing system of ducts opening into duodenum.

Q12 (a) Where are gastric glands present ?

      (b) Name 3 major types of gland cells in gastric mucosa.

Q13. Where crypts of Liberkuhn & Brunner’s gland located & what are are their role in digestion?

Q14. How does the major nutrient present in chapattis eaten by you gets digested & finally absorbed in alimentary canal?

Q15. Name enzymes for protein digestion in gastric, pancreatic & intestinal juices, their substrates & products of their action.

Q16. How does fats in your food get digested & absorbed in the body? Explain in detail.

Q17. Describe the process of absorption in the small intestine.

Q18. Explain role of large intestine.

Q19. Describe the major disordered of human digestive system.

Q20. How is our gut lining protected from its own secretions of proteases?

Important Questions for NCERT Class 11 Biology Digestion and Absorption

Ques. Which group of three of the following five statements (1-5) contain all three correct statements regarding beri-beri?
1. A crippling disease prevalent among the native population of sub-Saharan Africa.
2. A deficiency disease caused by lack of thiamine (vitamin B1).
3. A nutritional disorder in infants and young children when the diet is persistently deficient in essential protein.
4. Occurs in those countries where the staple diet is polished rice.
5. The symptoms are pain from neuritis, paralysis, muscle wasting, progressive oedema, mental deterioration and finally heart failure.
(a) 2, 4 and 5 (b) 1, 2 and 4
(c) 1, 3 and 5 (d) 2, 3 and 5 

Answer: A

Ques. The richest sources of vitamin B12 are
(a) goat’s liver and Spirulina
(b) chocolate and green gram
(c) rice and hen’s egg
(d) carrot and chicken’s breast. 

Answer: A

Ques. Which one of the following pairs is not correctly matched?
(a) Vitamin B12 - Pernicious anaemia
(b) Vitamin B6 - Convulsions
(c) Vitamin B1 - Beri-beri
(d) Vitamin B2 - Pellagra 

Answer: D

Ques. Which one of the following pairs is not correctly matched ?
(a) Vitamin C - Scurvy
(b) Vitamin B2 - Pellagra
(c) Vitamin B12 - Pernicious anaemia
(d) Vitamin B6 - Beri-beri 

Answer: B

Ques. Stool of a person is whitish grey coloured due to malfunction of which of the following organ?
(a) Pancreas (b) Spleen
(c) Kidney (d) Liver 

Answer: D

Ques. Continuous bleeding from an injured part of body is due to deficiency of
(a) vitamin A (b) vitamin B
(c) vitamin K (d) vitamin E.

Answer: C

Ques. Which one of the following is correctly matched?
(a) Vitamin E - Tocopherol
(b) Vitamin D - Riboflavin
(c) Vitamin B - Calciferol
(d) Vitamin A - Thiamine 

Answer: A

Ques. Which food should be eaten during deficiency of rhodopsin in eyes?
(a) Carrot and ripe papayas
(b) Guava, banana
(c) Mango and potato
(d) None of the above 

Answer: A

Ques. To which of the following families do folic acid and pantothenic acid belong?
(a) Vitamin C (b) Vitamin B complex
(c) Vitamin K (d) Vitamin A 

Answer: B

Ques. Which of the following is mismatched?
(a) Vitamin A - Xerophthalmia
(b) Vitamin D - Rickets
(c) Vitamin K - Beri-beri
(d) Vitamin C - Scurvy 

Answer: C

Ques. Which one of the following is a protein deficiency disease?
(a) Kwashiorkor (b) Night blindness
(c) Eczema (d) Cirrhosis 

Answer: A

Ques. Pellagra disease is caused by the deficiency of
(a) niacin (b) tocopherol
(c) riboflavin (d) folic acid. 

Answer: A

Ques. High cholesterol patients are advised to use
(a) ghee, butter and oils
(b) groundnut oil, margarine and vegetable oils
(c) fatty oil and butter
(d) cheese, dalda and ghee. 

Answer: B

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

Answer: A

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

Answer: A

Ques. Calcium deficiency in the body occurs in the absence of
(a) vitamin C (b) vitamin D
(c) vitamin B (d) vitamin E. 

Answer: B

Ques. Prolonged deficiency of nicotinic acid causes
(a) pellagra (b) xerophthalmia
(c) osteomalacia (d) anaemia. 

Answer: A

Ques. Which of the following pair is characterised by swollen lips, thick pigmented skin of hands and legs and irritability?
(a) Thiamine – Beri-beri
(b) Protein – Kwashiorkor
(c) Nicotinamide – Pellagra
(d) Iodine – Goitre

Answer: C