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NEET • BIOLOGY • DIGESTION AND ABSORPTION

Digestion and absorption practice · Hard

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Showing 31-60 of 73 questions

31 Hard

31 of 73

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Which two ducts are responsible for the formation of a duct that carry bile from the gall bladder and conduct it into the first section of the gall bladder and conduct it into the first section of the small intestine?

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Correct option: D

4 and 1

Option D (4 and 1) is correct because the common bile duct is formed by the union of the hepatic duct (1) and the cystic duct (4).

32 Hard

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Inactive enzyme in the pancreatic juice is

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Correct option: B

Procarboxypeptidase

Option B (Procarboxypeptidase) is correct because it is an inactive enzyme (zymogen) secreted by the pancreas that is later activated in the small intestine.

33 Hard

33 of 73

Remembering +4 | -1

Deficiency of which vitamin causes type 1 and type 2 diabetes?

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Correct option: C

Vitamin-D

Option C (Vitamin-D) is correct because Vitamin D plays a crucial role in insulin secretion and insulin sensitivity, and its deficiency is associated with an increased risk of both type 1 and type 2 diabetes.

34 Hard

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Understanding +4 | -1

Note the following
I. Dentition is heterodont.
II. Canines are poorly developed.
III. Incisors are chisel-like poorly developed.
IV. Herbivorous and diastema is present.
V. The dental formula is I 2/1, C 0/0, Pm 3/2, M 3/3
Which of the above are true for Oryctolagus?

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Correct option: B

I, IV and V

Option B (I, IV and V) is correct because Oryctolagus (rabbit) has heterodont dentition, is herbivorous with a diastema, and has the given dental formula.

35 Hard

35 of 73

Remembering +4 | -1

Which of the following guards the opening of common bile duct into pancreatic duct?

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Correct option: A

Sphincter of Boyden

Option A (Sphincter of Boyden) is correct because the Sphincter of Boyden regulates the flow of bile into the duodenum.

36 Hard

36 of 73

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Which of the following is an accessory organ of digestion?

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Correct option: B

Pancreas

Option B is correct because the pancreas is an accessory organ of digestion, secreting enzymes and hormones that aid in the digestive process.

37 Hard

37 of 73

Remembering +4 | -1

What is the correct dental formula of rat?

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Correct option: D

\mathrm{I}\frac{1}{1},\mathrm{C}\frac{0}{0},\mathrm{PM}\frac{0}{0},\mathrm{M}\frac{3}{3}

Option D (

\mathrm{I}\frac{1}{1},\mathrm{C}\frac{0}{0},\mathrm{PM}\frac{0}{0},\mathrm{M}\frac{3}{3}

) is correct because it represents the number and arrangement of incisors, canines, premolars, and molars in one half of the upper and lower jaw of a rat.

38 Hard

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Liver, in our body stores:

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Correct option: D

All of these

Option D (All of these) is correct because the liver stores various vitamins, including Vitamin A, Vitamin D, and Vitamin B

{}_{12}

39 Hard

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Parotid salivary glands are present:

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Correct option: B

Below the cheeks

The correct answer is B (Below the cheeks) because the parotid salivary glands are located on the sides of the face, below the cheeks, near the ears.

40 Hard

40 of 73

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Intestinal lymphangiectasia is characterised by

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Correct option: A

Dilated intestinal lacteals

Option A (Dilated intestinal lacteals) is correct because intestinal lymphangiectasia is characterized by dilated lacteals, which are lymphatic vessels in the small intestine.

41 Hard

41 of 73

Understanding +4 | -1

Which of the following statements are correct?

A. The chemical process of digestion is initiated in oral cavity by the hydrolytic action of the carbohydrate
splitting enzyme, the salivary amylase.

B. Lipases are absent in secretion of gastric glands.

C. Bile helps in emulsification of fats.

D. Nucleases in the succusentericus acts on nucleic acids to form nucleotides and nucleosides.

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Correct option: B

A, C

Option B (A, C) is correct because the chemical process of digestion is initiated in the oral cavity by salivary amylase, and bile helps in emulsification of fats.

42 Hard

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Remembering +4 | -1

In elephants the tusks are:

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Correct option: A

Incisors

Option A (Incisors) is correct because elephant tusks are modified incisors, which are the front teeth.

43 Hard

43 of 73

Understanding +4 | -1

Choose a proteolytic enzyme that does not act on consumed/dietary proteins or their break down products in human.

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Correct option: C

Enterokinase

Option C (Enterokinase) is correct because enterokinase activates trypsinogen to trypsin, which then activates other proteolytic enzymes; it doesn't directly act on dietary proteins.

44 Hard

44 of 73

Remembering +4 | -1

In which of the following organ, putrefying bacteria are present?

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Correct option: A

Intestine

Option A (Intestine) is correct because the intestine, particularly the colon, harbors a large population of putrefying bacteria.

45 Hard

45 of 73

Analyzing +4 | -1

Go through the following statements regarding Oryctolagus and select the correct option
I. Denition is heterodont
II. Canines are absent
III. Herbivorous and diastema is present
IV. Incisors are chisel like and poorly developed
V. The dental formula is 2033/1023

View answer and explanation

Correct option: C

I, III and V are true while II and IV are false

Option A is correct because Oryctolagus (rabbit) has heterodont dentition, lacks canines, is herbivorous with a diastema, incisors are well-developed, and the dental formula is 2033/1023.

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46 Hard

46 of 73

Understanding +4 | -1

Assertion: Mucous glands occur throughout the alimentary canal.

Reason: Mucous facilitates movement of food through the alimentary canal.

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Correct option: D

Both Assertion and Reason are correct and Reason is the correct explanation of Assertion

Option D is correct because mucous glands are present throughout the alimentary canal, and their secretion facilitates food movement.

47 Hard

47 of 73

Understanding +4 | -1

Identify, wheather the given nutrients are absorbed by the active transport, simple diffusion or facilitated transport
I. Glucose
II. Fructose
III. Vitamin-K
IV. Amino acids
Choose the correct option accordingly

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Correct option: C

I-Active transport
II- Facilited transport
III-Simple diffusion
II-Active transport

Option C (I-Active transport, II- Facilitated transport, III-Simple diffusion, IV-Active transport) is correct because it accurately describes the absorption mechanisms for each nutrient.

48 Hard

48 of 73

Understanding +4 | -1

Fat present below the skin surface in our body, acts as a barrier against:

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Correct option: A

Loss of heat from the body

Option A is correct because subcutaneous fat acts as an insulator, reducing heat loss from the body.

49 Hard

49 of 73

Remembering +4 | -1

Select the option that represents correct combination of components of succus entericus.

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Correct option: B

Enterokinase, lactase, nucleosidase

Option B (Enterokinase, lactase, nucleosidase) is correct because these enzymes are typically found in succus entericus, the intestinal juice secreted by the small intestine.

50 Hard

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Understanding +4 | -1

Assertion: Maximum absorption of food occurs in small intestine.

Reason: Villi & microvilli abundantly present in small intestine.

View answer and explanation

Correct option: D

Both Assertion and Reason are correct and Reason is the correct explanation of Assertion

Option D (Both Assertion and Reason are correct and Reason is the correct explanation of Assertion) is correct because the presence of villi and microvilli in the small intestine increases the surface area for maximum absorption.

51 Hard

51 of 73

Analyzing +4 | -1

Consider the following statement regarding digestion and absorption in mammals. Identify wheather they are true or false and select the correct option accordingly I. Both Kupffer’s cells and glisson’s capsule are the characteristic of mammalian liver II. In dentition, thecodont means that teeth are embedded in the socket of jaw bones III. There are three pair of salivary glands in human beings, out of them parotid, situated beneath the tongue are the smallest salivary gland IV. Zymogen (inactive form of enzymes) are not the secretions of peptic cells

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Correct option: C

I and II are true while III and IV are false

Option C is correct because statements I and II are true, while statements III and IV are false. Statement III incorrectly states the location and size of the parotid gland, and statement IV incorrectly suggests zymogens are not secreted by peptic cells.

52 Hard

52 of 73

Understanding +4 | -1

Assertion: Human dentition is referred to as diphyodont.

Reason: Permanent set has teeth of four different types.

View answer and explanation

Correct option: A

Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion

Option A is correct because human dentition is diphyodont (two sets of teeth), and the permanent set has four different types, but the reason doesn't explain why it's diphyodont.

53 Hard

53 of 73

Remembering +4 | -1

Proportion of which of the following should be increased in diet to improve strength and growth of bones?

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Correct option: C

Vitamin-D,

\mathrm{C}{\mathrm{a}^{2 + }}

and vitamin-A

Option A is correct because Vitamin D, Calcium, and Vitamin K are essential for bone health, promoting bone density and strength.

54 Hard

54 of 73

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Peyer's patches are present in

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Correct option: A

ileum

Option A (ileum) is correct because Peyer's patches, which are lymphoid nodules, are predominantly found in the ileum of the small intestine.

55 Hard

55 of 73

Analyzing +4 | -1

Read the following statements thoroughly and identify wheather they are true and false. Choose the right option accordingly
I. Bile is produced and stored in the liver and gall bladder, respectively
II. Common bile duct is the fusion of all the right and left hepatic ducts
III. Hepato-pancreatic duct opens into the proximal part of the small intestine
IV. Pancreas consists of two parts, exocrine and endocrine, which secretes insulin and glucagon hormone and pancreatic juices containing enzymes, respectively
V. Pepsinogen, a secretion of chief cells is activated by hydrochloric acid
VI. Peptides are converted into dipeptides with the action of carboxypeptidase

View answer and explanation

Correct option: D

Statement I, III, V and VI are true while III and IV are false

Option C (Statement I, III, IV and V are true while II and VI are false) is correct because statements II and VI contain inaccuracies regarding bile duct formation and peptide digestion, respectively.

56 Hard

56 of 73

Understanding +4 | -1

Digestion of protein is completed in

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Correct option: D

Both (b) and (c )

Option D (Both (b) and (c )) is correct because protein digestion is completed in the duodenum and ileum of the small intestine.

57 Hard

57 of 73

Remembering +4 | -1

Deficiency of cyanocobalamine causes

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Correct option: A

Pernicious anaemia

Option A (Pernicious anaemia) is correct because cyanocobalamin (Vitamin B12) deficiency leads to impaired DNA synthesis, particularly in rapidly dividing cells like those in the bone marrow, resulting in pernicious anemia.

58 Hard

58 of 73

Understanding +4 | -1

What do you mean by the absorption of food?

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Correct option: A

It is a process by which the end products of the digestion passes through the intestinal mucosa into blood or lymph

Option A (It is a process by which the end products of the digestion passes through the intestinal mucosa into blood or lymph) is correct because it accurately defines the process of absorption.

59 Hard

59 of 73

Remembering +4 | -1

Which of the following statement is true?

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Correct option: D

Chymotrypsin can digest casein

Option D (Chymotrypsin can digest casein) is correct because chymotrypsin is a protease that can break down casein, a protein found in milk.

60 Hard

60 of 73

Understanding +4 | -1

The catilaginous structure/s, lined with mucous membrane is/are

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Correct option: D

Both 1 and 3

Option D (Both 1 and 3) is correct because both the larynx and trachea are cartilaginous structures lined with a mucous membrane.

Revision notes and key takeaways

Review DIGESTION AND ABSORPTION in your textbook or class notes, then use this set to check your understanding.

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