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Test: Respiration in Organisms


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Test: Respiration in Organisms - Question 1

In insects, air enters the body through

Detailed Solution for Test: Respiration in Organisms - Question 1

Insect bodies have openings, called spiracles, along the thorax and abdomen. These openings connect to the tubular network, allowing oxygen to pass into the body, regulating the diffusion of CO2 and water vapor. 

Test: Respiration in Organisms - Question 2

Blood is red coloured due to presence of

Detailed Solution for Test: Respiration in Organisms - Question 2

Blood is red coloured due to the presence of hemoglobin pigment that carries oxygen.

Test: Respiration in Organisms - Question 3

Inhalation is the

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The part of breathing during which oxygen rich air is taken in is called inhalation.

Test: Respiration in Organisms - Question 4

During exhalation, the ribs move

Detailed Solution for Test: Respiration in Organisms - Question 4

During exhalation, i.e. releasing air during respiration, the ribs move downwards to reduce the volume of the thoracic cavity.

CBSE Class 7 Biology Notes How do we Breathe?

Test: Respiration in Organisms - Question 5

Plants breathe through their stomata located in their

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Stomata are small openings on the leaves surface through which exchange of gases takes place in plants.

Test: Respiration in Organisms - Question 6

Gills are respiratory organs in

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Gills are respiratory organs in fish. Gills intake oxygen from water.

What are gills What purpose do they serve in fish class 11 biology CBSE

Test: Respiration in Organisms - Question 7

Breathing is a

Detailed Solution for Test: Respiration in Organisms - Question 7
  • Breathing may be defined as the process of taking in oxygen from the environment and giving out carbon dioxide So, breathing is just a physical process in which no energy is released.
  • On the other hand, the process of respiration is more complex. It involves the inhalation of air, absorption and transport of oxygen to various cells of the body, oxidation of food in the cells, and elimination of carbon dioxide from the body. Thus, respiration is a biochemical process.
Test: Respiration in Organisms - Question 8

In anaerobic respiration which chemical substance is produced?

Detailed Solution for Test: Respiration in Organisms - Question 8

Anaerobic respiration occurs in the absence of oxygen and is less efficient than aerobic respiration. Unlike aerobic respiration, the end products here are ethyl alcohol as in alcoholic fermentation and lactic acid as in animal cells.

Thus Option C is correct.

Test: Respiration in Organisms - Question 9

More energy is released in

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During aerobic respiration, complete oxidation of food takes place and more energy is released in form of ATP.

Test: Respiration in Organisms - Question 10

The opening of the pharynx to larynx is guarded by

Detailed Solution for Test: Respiration in Organisms - Question 10

The pharynx opens in the larynx through the glottis which is guarded by leaf-like unpaired cartilage which is called epiglottis. It prevents the entrance of food into the trachea.

Opening of larynx in the pharynx is guarded by epiglotti. True or False ​ -  Brainly.in

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