The number of incorrect statements amongst the given statements is:

I. The tongue is attached to the roof of the oral cavity by the frenulum.

II. The structural and functional units of the human liver are the hepatic lobules.

III. Lysozyme present in saliva acts as an antibacterial agent that prevents infection.

IV. Brunner’s glands are located in the submucosa of the duodenum.

V. No significant digestive activity occurs in the large intestine.

 1.  1       

 2.  3

 3.  4       

 4.  5

Subtopic:  Alimentary Canal: Oral Cavity & Teeth |
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Assertion (A): Majority of the mammals possess diphyodont teeth.
Reason (R): Humans have heterodont dentition.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic:  Alimentary Canal: Oral Cavity & Teeth |
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Assertion (A): Enamel is the hardest substance of the human body.
Reason (R): Enamel is mainly formed of calcium carbonate.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
 
Subtopic:  Introduction to Digestive System | Alimentary Canal: Oral Cavity & Teeth |
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Find out the correct matches:
I. Peyer's patches - Small intestine
II. Ameloblasts - Dentine forming cells
III. Wharton's duct - Submandibular salivary gland
IV. Haustration - Large intestine
V. Sphincter of Oddi - At the opening of bile duct before it joins pancreatic duct
1. I, III, IV
2. I, II, III
3. III, IV, V
4. II, IV, V
Subtopic:  Alimentary Canal: Oral Cavity & Teeth | Peristalsis: Gland in Alimentary Canal | Movement of Food in Gut | Pancreatic Secretions |
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