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प्रश्न
In the lungs what substance is removed from the body?
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उत्तर
Carbon dioxide is removed from the body.
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संबंधित प्रश्न
What would be the consequences of a deficiency of haemoglobin in our bodies?
Given below is a square of letters in which are hidden different words related to respiration in organisms. These words may be present in any direction − upwards, downwards, or along the diagonals. Find the words for your respiratory system. Clues about those words are given below the square.

- The air tubes of insects
- Skeletal structures surrounding chest cavity
- Muscular floor of chest cavity
- Tiny pores on the surface of leaf
- Small openings on the sides of the body of an insect
- The respiratory organs of human beings
- The openings through which we inhale
- An anaerobic organism
- An organism with tracheal system
The exchange of respiratory gases in the cells of plants occurs by the process of _______________
(a) Osmosis
(b) Diffusion
(c) Glycolysis
(d) exhalation
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The trachea divides into tow tubes at its lower end. What is the name of these tubes?
Explain why, when air is taken in and let out during breathing, the lungs always contain a residual volume of air.
Explain how, it would benefit deep sea divers if humans also had gills.
Draw a labelled diagram of the human respiratory system.
Which of the following is the correct sequence of air passage during inhalation?
(a) nostrils → larynx → pharynx → trachea → lungs
(b) nasal passage → trachea → pharynx → larynx → alveoli
(c) larynx → nostrils → pharynx → lungs
(d) nostrils → pharynx → larynx → trachea → alevoli
During the respiration of an organism A, 1 molecule of glucose produces 2 ATP molecules whereas in the respiration of another organism B, 1 molecule of glucose produces 38 ATP molecules.
(a) Which organism is undergoing aerobic respiration?
(b) Which organism is undergoing anaerobic respiration?
(c) Which type of organism, A or B, can convert glucose into alcohol?
(d) Name one organism which behaves like A.
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Some sugar solution is taken in a test-tube and a little of substance X in powder form is added to it. The mouth of test-tube is closed with a cork and allowed to stand for sometime. On opening the cork, a characteristic smell of substance Y is obtained and a gas Z is also observed to be formed. The gas Z extinguishes a burning matchstick.
(a) What could be (i) X, (ii) Y, and (iii) Z?
(b) What is the process of converting sugar into substance Y by the action of X known as?
(c) What type of respiration is exhibited by X in the above process?
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During respiration, ____________ gas is given out.
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Transport of CO2 by plasma : 7% :: Transport of CO2 by bicarbonate ions: ____________.
term 'respiration' includes
What is common between extensive network of blood vessels around walls of alveoli and in glomerulus of nephron?
During respiration exchange of gases take place in
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