Tag: digestion of food

Questions Related to digestion of food

The inner layer of the stomach releases

evs digestion of food types of ecological pyramids the muscular system and digestive system in human beings introduction to human digestive system

  1. Water

  2. Blood

  3. Minerals

  4. Digestive juices

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Correct Option: D
Explanation:

  • The stomach is made of  4 layers. They are serosa, muscularis, submucosa, mucosa. These layers of smooth muscle consist of the outer longitudinal, the middle circular, and the inner oblique muscles.
  • The innermost layer or lining (mucosa) contains the glands that release digestive juices which includes pepsin, chymotrypsin, hydrochloric acid etc. Hence, The inner layer of the stomach releases digestive juices.
So, the correct answer is 'digestive juices'.

Brunner's glands are present in submucosa of.

evs digestion of food types of ecological pyramids the muscular system and digestive system in human beings introduction to human digestive system

  1. Stomach

  2. Caecum

  3. Intestine

  4. Oesophagus

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Correct Option: C

The stomach takes part in

evs digestion of food types of ecological pyramids the muscular system and digestive system in human beings introduction to human digestive system

  1. Breaking food mechanically

  2. Partially digesting the food

  3. Disinfecting the food

  4. All the above

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Correct Option: D

Ecological pyramids are of

evs digestion of food types of ecological pyramids the muscular system and digestive system in human beings introduction to human digestive system

  1. Two types

  2. Three types

  3. Four types

  4. Five types

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Correct Option: B
Explanation:

A pyramid-shaped diagram represents quantity wise numbers of organisms, energy relationships, and biomass of an ecosystem; In lower trophic levels number of organisms are high(plants) and at the highest trophic level, lesser number as some energy is lost as heat, in each transformation. This relationship is sometimes called an ecological pyramid.  The ecological pyramids represent the trophic structure and also trophic function of the ecosystem. In many ecological pyramids, the producer form the base and the successive trophic levels make up the apex. The ecological pyramids may be of following three kinds-

Pyramid of Number- It is the arrangement of trophic level on the basis of the number of organism present at each stage.
Pyramid of Biomass-  It is the arrangement of trophic level on the basis of biomass present at each trophic levels.
Pyramid of Energy- It is the arrangement of trophic level on the basis of energy flow between them.

Which part of the body contains teeth?

bio-chemistry digestion of food types of ecological pyramids the muscular system and digestive system in human beings introduction to human digestive system

  1. Buccal cavity

  2. Body cavity

  3. Both A and B

  4. Tooth cavity

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Correct Option: A
Explanation:

The mouth leads to the buccal cavity or oral cavity. The oral cavity has a number of teeth and a muscular tongue. Teeth help in mastication of food when tongue helps in mixing of food with saliva.

So the correct answer is 'Buccal cavity'.

The process of taking in food from the environment is called 

bio-chemistry digestion of food types of ecological pyramids the muscular system and digestive system in human beings introduction to human digestive system

  1. Ingestion

  2. Digestion

  3. Assimilation

  4. Nutrition

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Correct Option: A
Explanation:

  • Ingestion is the consumption of a substance by an organism.
  •  In animals, it normally accomplished by taking in the substance through the mouth into the gastrointestinal tract, such as through eating or drinking. 
  • In single-celled organisms, ingestion can take place by taking the substance through the cell membrane. Hence, The process of taking in food from the environment is called ingestion.
So, the correct answer is 'ingestion'.

In the buccal cavity, food is broken down by the teeth of

bio-chemistry digestion of food types of ecological pyramids the muscular system and digestive system in human beings introduction to human digestive system

  1. Upper jaw only

  2. Lower jaw only

  3. Both A and B

  4. Tongue

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Correct Option: C
Explanation:

The tongue is a muscular structure that cannot break down food. The food is broken down by the teeth of the upper jaw and lower jaw. Teeth is a hard part of the mouth that has a hard chewing surface covering made up of an enamel which helps in the mastication of food.

So the correct answer is 'Both A and B'.

The fluid secreted in the mouth for partial breakdown of food is called as

bio-chemistry digestion of food types of ecological pyramids the muscular system and digestive system in human beings introduction to human digestive system

  1. Gastric juice

  2. Pancreatic juice

  3. Saliva

  4. Hormone

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Correct Option: C
Explanation:

Saliva is present in the buccal cavity. It helps in lubricating and adhering the masticated food particles into a bolus.(mass of food) has salivary amylase that hydrolyzed 30% of starch into maltose. Hence, it helps in particle digestion of food.

So the correct answer is 'Saliva'.

A bolus is

bio-chemistry digestion of food types of ecological pyramids the muscular system and digestive system in human beings introduction to human digestive system

  1. A mass of crushed food moistened with saliva

  2. The semisolid material resulting from partial digestion in the stomach

  3. The milky emulsified fat absorbed from small intestine

  4. Indigestible materials that help in movement and absorption of food

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Correct Option: A
Explanation:

A bolus is a mass of crushed food moistened with saliva.

So the correct option is A.