CBSE Class 11 Biology – MCQ and Online Tests – Unit 16 – Digestion and Absorption
Every year CBSE schools conducts Annual Assessment exams for 6,7,8,9,11th standards. These exams are very competitive to all the students. So our website provides online tests for all the 6,7,8,9,11th standard’s subjects. These tests are also very effective and useful for those who preparing for any competitive exams like Olympiad etc. It can boost their preparation level and confidence level by attempting these chapter wise online tests.
These online tests are based on latest CBSE syllabus. While attempting these our students can identify the weak lessons and continuously practice those lessons for attaining high marks. It also helps to revise the NCERT textbooks thoroughly.
CBSE Class 11 Biology – MCQ and Online Tests – Unit 16 – Digestion and Absorption
Question 1.
Which of the following part of human intestine hosts microorganisms?
(a) Colon
(b) Caecum
(c) Anus
(d) Rectum
Answer
Answer: (b) Caecum
Explanation:
Caecum is a small blind sac which hosts some microorganisms.
Question 2.
The glucose is converted into glycogen in liver and stored in
(a) Liver and spleen
(b) Liver and muscle
(c) Liver
(d) Spleen and muscles
Answer
Answer: (c) Liver
Question 3.
Duct leading from parotid gland and opening into vestibule is
(a) Wolffian duct
(b) Stensons duct
(c) Haversian duct
(d) Infra-orbit duct
Answer
Answer: (b) Stensons duct
Question 4.
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
Answer
Answer: (d) glucose is converted into pyruric acid
Question 5.
If for some reason our goblet cells are non-functional this will adversely affect
(a) Smooth movement of food down the intestine
(b) Production of somatostatin
(c) Secretion of sebum from the sebaceous glands
(d) Maturation of sperms
Answer
Answer: (a) Smooth movement of food down the intestine
Question 6.
The HCl in gastric juice converts:
(a) Disaccharide to monosaccharide
(b) Pepsinogen to pepsin
(c) Prorennin to rennin
(d) Polypeptide to peptide
Answer
Answer: (b) Pepsinogen to pepsin
Question 7.
Which enzyme is used in alcoholic fermentation of yeast?
(a) Maltase
(b) Invertase
(c) Sucrase
(d) Zymase
Answer
Answer: (d) Zymase
Question 8.
Assimilation means
(a) utilising the water taken by body
(b) accumulating the food for digestion
(c) utilisation of absorbed substances
(d) collecting wastes left after the absorption of required nutrients
Answer
Answer: (c) utilisation of absorbed substances
Explanation:
The absorbed substances finally reach the tissues which utilise them for their activities. This process is called assimilation.
Question 9.
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
Answer
Answer: (d) Concentration of hydrogen ions in a solution
Question 10.
Small projections of upper surface of tongue are called
(a) fimbriae
(b) pilli
(c) papillae
(d) cilia
Answer
Answer: (c) papillae
Explanation:
The upper surface of the tongue has small projections called papillae, some of them bears taste buds.
Question 11.
Sweetest sugar is
(a) Fructose
(b) Sucrose
(c) Glucose
(d) Lactose
Answer
Answer: (a) Fructose
Question 12.
Which organ is most affected by jaundice?
(a) Pancreas
(b) Liver
(c) Stomach
(d) Intestine
Answer
Answer: (b) Liver
Explanation:
Jaundice affects liver. Skin and eyes turn yellow due to the deposition of bile pigments.
Question 13.
Globet cells of intestinal mucosal epithelium secrete
(a) mucus
(b) cholesterol
(c) peptones
(d) bilirubin
Answer
Answer: (a) mucus
Explanation:
Intestinal mucosal epithelium has globet cells which secrete mucus.
Question 14.
Emulsification of fat takes place through
(a) Liver enzymes
(b) Bile pigments
(c) Bile salts
(d) Enzymes of small intestine
Answer
Answer: (c) Bile salts
Question 15.
Epithelial cells of the intestine involved in food absorption have on their surface
(a) phagocytic vesicles
(b) pinocytic vesicles
(c) microvilli
(d) zymogen granules
Answer
Answer: (c) microvilli
Question 16.
Which part of brain causes nausea?
(a) Pons
(b) Hypothalamus
(c) Parietal lobe
(d) Medulla
Answer
Answer: (d) Medulla
Explanation:
Vomiting is the ejection of stomach contents through mouth.
This is the reflex action which is controlled by medulla.
A feeling of nausea preceds vomiting.
Question 17.
Correct enzyme-substrate pair is
(a) Maltose-lactase
(b) Protein-amylase
(c) Carbohydrate-lipase
(d) Casein-
Answer
Answer: (d) Casein-rennin
Question 18.
Carrier ions like Na+ facilitate the absorption of substances like
(a) Fructose and some amino acids
(b) Amino acids and glucose
(c) Glucose and fatty acids
(d) Fatty acids and glycerol
Answer
Answer: (a) Fructose and some amino acids
Question 19.
Peyers patches found in the small intestine are
(a) Epithelial tissue
(b) Glandular tissue
(c) Lymphatic tissue
(d) Haemopoietic tissue
Answer
Answer: (c) Lymphatic tissue
Question 20.
During prolonged fasting, in what sequence are the following organic compounds used up by the body?
(a) First carbohydrates, next proteins and lastly lipids
(b) First carbohydrates, next fats and lastly proteins
(c) First fats, next carbohydrates and lastly proteins
(d) First proteins next lipids and lastly carbohydrates
Answer
Answer: (b) First carbohydrates, next fats and lastly proteins
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