Tag: coordination in the process of digestion

Questions Related to coordination in the process of digestion

Dental formula in human beings 

biology digestive system of human buccal cavity digestive system - organs coordination in the process of digestion

  1. $\dfrac{3223}[3223}$

  2. $\dfrac{2123}[2123}$

  3. $\dfrac{1232}[1232}$

  4. $\dfrac{2233}[2233}$

Show answer
Correct Option: B
Explanation:

The correct answer is (b).

Dental formula refers to 

biology digestive system of human buccal cavity digestive system - organs coordination in the process of digestion

  1. The minimum number of teeth in one half of one jaw

  2. The number of each type of tooth in one half of one jaw

  3. The overall geometric shape of the jaw

  4. Maximum number of teeth in the mouth

Show answer
Correct Option: A
Explanation:

In each set of teeth, incisors (I) are indicated first, canines (C) second, premolars (P) third, and finally molars (M), giving I:C:P:M which is the minimum number of teeth in one half of one jaw. 

So, 'the correct option is 'The minimum number of teeth in one half of one jaw'.

Identify typical dental formula of a metatherian.

biology digestive system of human buccal cavity digestive system - organs coordination in the process of digestion

  1. i 5/4. c 1/1, pm 3/3, m 4/4

  2. i 3/3, c 1/1, pm 4/4, m 3/3

  3. i 4/3, c 1/1, pm 3/3, m 4/4

  4. i 4/5, c 1/1, pm 3/3, m 4/4

Show answer
Correct Option: A
Explanation:

There is only one set of teeth functional throughout life with the exception of a milk molar which is replaced by the last premolar. Incisors are more numerous than in placentals. 3 premolars and 4 molars as against 4 P and 3 M in placentals. Dentition in opossum is I 5/4, C 1/1, P 3/3, M 4/4. 


So, the correct option is 'Option A'.

Uvula is part of

biology coordination in life processes buccal cavity digestive system - organs coordination in the process of digestion

  1. Tongue

  2. Soft palate

  3. Hard palate

  4. Epiglottis

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Correct Option: B

Uvula can close the opening of

biology coordination in life processes buccal cavity digestive system - organs coordination in the process of digestion

  1. Larynx

  2. Gullet

  3. Internal nares

  4. Eustachian tubes

Show answer
Correct Option: C

From which part of the alimentary canal does chemical digestion begins?

biology through the alimentary canal nutrition and its types types of nutrition in plants different modes of nutrition in plants digestive system - organs process of digestion coordination in the process of digestion

  1. Mouth

  2. Esophagus

  3. Stomach

  4. Gall bladder

  5. Small intestine

Show answer
Correct Option: A
Explanation:

Chemical digestion involves enzymes. In the mouth, chemical digestion is initiated when the food comes in contact with saliva, which is secreted by salivary glands. It contains salivary amylase which begins the digestive process by breaking down starch and converting it into maltose. Chemical digestion then further continues in stomach and then finally in the small intestine.

So, option A is the correct answer.

The chemical digestion of food starts in the

biology through the alimentary canal nutrition and its types types of nutrition in plants different modes of nutrition in plants digestive system - organs process of digestion coordination in the process of digestion

  1. Mouth

  2. Stomach

  3. Esophagus

  4. Small intestine

  5. Large intestine

Show answer
Correct Option: A
Explanation:

Chemical digestion food starts in the mouth as saliva is secrets from salivary gland which consists salivary amylase enzyme which acts on starch and converts it into the simpler form the churned food particles with saliva is called as the bolus then transferred to the stomach through the esophagus.

Carnivorous animals use these teeth to tear flesh.

biology through the alimentary canal nutrition and its types types of nutrition in plants different modes of nutrition in plants digestive system - organs process of digestion coordination in the process of digestion

  1. Incisors

  2. Canines

  3. Premolars

  4. Molars

Show answer
Correct Option: B
Explanation:

Carnivorous animals are meat eating animals. They use canines which are long, pointed teeth near the front of their jaw for tearing of flesh. Other teeth along the side of their jaw, molars and premolars, have uneven edges and are used for shearing the food in smaller pieces.

So, option B is the correct answer.

Pick out the odd one: among the parts of the alimentary canal are

biology through the alimentary canal nutrition and its types types of nutrition in plants different modes of nutrition in plants digestive system - organs process of digestion coordination in the process of digestion

  1. Pharynx

  2. Mouth

  3. Buccal cavity

  4. Pancreas

Show answer
Correct Option: D
Explanation:

Pancreas helps in digestion by secreting pancreatic juice in small intestine. However pancreas is a gland and is not a part of alimentary canal. Alimentary canal is a muscular tube which extends from mouth to anus and includes the mouth, pharynx, oesophagus, stomach and the intestines.

So, option D is the correct answer.

Consider the following statement regarding human.
a. Duodenum is the longest part of small intestine
b. Hepatic and cystic ducts release their secretions into common bile duct whose opening is controlled by sphincter of Oddi
c. Ileocaecal valve is present at the junction of small intestine and large intestine
d. Mechanical digestion and chemical digestion of food occurs in buccal cavity, stomach and small intestine 
Which of the following choices is correct?

biology digestive system of human digestive system - organs process of digestion coordination in the process of digestion

  1. A and B only

  2. B and C only

  3. C and D only

  4. A, B, C and D

Show answer
Correct Option: C
Explanation:
a. Ileum is the longest part of small intestine.
b. Bile duct and pancreatic duct open together into the duodenum as the common hepato-pancreatic duct which is guarded by a sphincter called the sphincter of oddi.
c. Ileocaecal valve is present at the junction of small intestine and large intestine.
d. Mechanical digestion and chemical digestion of food occurs in buccal cavity, stomach and small intestine.
a and b are wrong. c and d are correct.
So, the correct answer is 'C and D only'