Tag: digestion and absorption

Questions Related to digestion and absorption

Defaecation is carried out by mass peristaltic movement and is a

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  1. Voluntary process

  2. Involuntary process

  3. Partly voluntary and partly involuntary process

  4. Initially involuntary process then voluntary process

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Correct Option: A

Amoeba engulfs food by the process of

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  1. Photosynthesis

  2. Phagocytosis

  3. Respiration

  4. Meiosis

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Correct Option: B
Explanation:

Amoeba obtains the food through phagocytosis process. Since, Amoeba has no mouth, it takes the food into it's body by means of pseudopodia, which completely enclose the particle of food, that is enveloped in vacuoles. Photosynthesis is a process used by plants and other organisms to convert light energy, normally from the Sun, into chemical energy that can be later released to fuel the organism's activities. In physiology, respiration is defined as the transport of oxygen from the outside air to the cells within tissues, and the transport of carbon dioxide in the opposite direction. Meiosis is a process of cell division in eukaryotes characterized by: two consecutive divisions: meiosis I and meiosis II. 

Therefore, the correct answer is option B.

Amoeba procures food through

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  1. Proboscis

  2. Pseudopodia

  3. Cilia

  4. Tongue

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Correct Option: B
Explanation:

Pseudopods which translates to "false feet" are temporary cytoplasm-filled parts of the cell wall that are able to change their form in order to move. They are used in some eukaryotic cells to move around or to eat. Most cells that do this are called as amoeboids. The amoeba is a common example. Proboscis, cilia and tongue are absent in amoeba. 

Therefore, the correct answer is option B.

The inner lining of the stomach secretes

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  1. Mucous

  2. Hydrochloric acid

  3. Digestive enzymes

  4. All of the above

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Correct Option: D
Explanation:

The stomach is the main food storage tank of the body. If it were not for the stomach’s storage capacity, we would have to eat constantly instead of just a few times each day. The stomach also secretes a mixture of acid, mucus, and digestive enzymes that helps to digest and sanitize our food while it is being stored. 

Therefore, the correct answer is option D.

Pseudopodia are

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  1. False feet developed in some unicellular organisms

  2. Small hairlike structures present on the unicellular organisms

  3. Long, tube like structure coming out of the mouth

  4. Suckers which are attached to the walls ofintestines

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Correct Option: A
Explanation:

Pseudopods which translates to "false feet" are temporary cytoplasm-filled parts of the cell wall that are able to change their form in order to move. They are used in some eukaryotic cells to move around or to eat. Most cells that do this are called as amoeboids. The Amoeba is a common example. Proboscis, cilia and tongue are absent in Amoeba. 

Therefore, the correct answer is option A.

Digestion within a digestive tract is

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  1. Incomplete

  2. Extracellular

  3. The same as absorption

  4. Intracellular

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Correct Option: B
Explanation:
  • Extracellular digestion is a process in which saprobionts feed by secreting enzymes through the cell membrane onto the food.
  • The enzymes catalyze the digestion of the food into molecules small enough to be taken up by passive diffusion, transport or phagocytosis.
  • Intracellular digestion is a form of digestion wherein the breaking down of materials into smaller components takes place inside the cell.
  • An incomplete digestive system has only one opening. The food goes in the same opening that the waste comes out.

Therefore, the correct answer is option B.

Which begins at the buccal cavity and ends at the anus. The canal can be divided into compartments

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  1. Six

  2. Three

  3. Four

  4. Two

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Correct Option: A
Explanation:

The digestive system consists of the alimentary canal or digestive tract and two accessory glands, the liver and the pancreas. The digestive tract can in turn be divided into oral cavity, pharynx, stomach, small intestine, large intestine and anus. 

Therefore, the correct answer is option A.

Stomach is present in organisms belonging to Cyclostomes.

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  1. True

  2. False

  3. Ambiguous

  4. Data insufficient

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Correct Option: B
Explanation:

Cyclostomes are jaw-less and eel like animals belonging to division: Agnatha. Their digestive system lack stomach.

The two systems of the human body which help in the control and co-ordination of metabolic activities are __________.

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  1. Digestive and circulatory

  2. Respiratory and circulatory

  3. Excretory and skeletal

  4. Nervous and endocrine

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Correct Option: A

Digestion process in human is

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  1. Extracellular

  2. Intracellular

  3. Intercellular

  4. Both (a) and (c)

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Correct Option: D