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During respiration exchange of gases take place in - Science

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प्रश्न

During respiration exchange of gases take place in

पर्याय

  • trachea and larynx

  • alveoli of lungs

  • alveoli and throat

  • throat and larynx

MCQ

उत्तर

alveoli of lungs

Explanation -

The trachea and larynx offer a pathway for air to travel across. The Alveoli of the lungs are where gas exchange takes place. Oxygen diffuses into the bloodstream through alveoli, while carbon dioxide is expelled.

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पाठ 6: Life Processes - Multiple Choice Questions [पृष्ठ ५०]

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एनसीईआरटी एक्झांप्लर Science [English] Class 10
पाठ 6 Life Processes
Multiple Choice Questions | Q 16. | पृष्ठ ५०

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संबंधित प्रश्‍न

What are the different ways in which glucose is oxidized to provide energy in various organisms?


The exchange of respiratory gases in the cells of plants occurs by the process of _______________

(a) Osmosis
(b) Diffusion
(c) Glycolysis
(d) exhalation


The trachea divides into tow tubes at its lower end. What is the name of these tubes?


What organs are attached to the two bronchi?


Describe the process of respiration in the following part of a plant:

Root


How are oxygen and carbon dioxide exchanged in our body during respiration?


What type of repiration takes place in yeast?


Why is diffusion insufficient to meet the oxygen requirements of large multicellular organisms like humans?


Which of the following is correct for the process of anaerobic respiration?

  Carbon dioxide always produced A lot of energy released
(a) No Yes
(b) No No
(c) Yes No
(d) Yes Yes

Lack of oxygen in muscles often leads to cramps in the legs of sprinters. This is due to the conversion of pyruvate to:


Which of the following is most likely to have a much higher breathing rate?


A, B and C are three living organisms. The organism A is a unicellullar fungus which can live without air. It is used in the commercial production of an organic compound P from molasses. The organism B is a unicellular animal which lives in water and feeds and moves by using pseudopodia. It breathes through an organelle Q. The organism C is a tiny animal which acts as a carrier of malarial parasite. It breathes and respires through a kind of tiny holes R and air-tubes S in its body.

(a) What are organisms (i) A (ii) B, and (iii) C?
(b) Name (i) P (ii) Q (iii) R, and (iv) S.
(c) Which organism/organisms undergo aerobic respiration?
(d) Which organism/organisms undergo anaerobic respiration?


An organism X having breathing organs A lives on land. When organism X goes underwater, it cannot survive for a long time unless carrying an oxygen cylinder. On the other hand, the organism Y having breathing organs B always lives in water and if taken out of the water, it dies after a short while. A third organism Z having breathing organs C and D which lives on the banks of ponds, lakes, and rivers can survive on land as well as in water equally well.

(a) What could organism X be? Name the breathing organs A.

(b) What could organism Y be? Name the breathing organs B.

(c) What could organism Z be? Name the breathing organs C and D.

(d) Out of X, Y, and Z, which organism is (i) amphibian, (ii) aquatic, and (iii)

terrestrial?


In the lungs what substance is removed from the body?


Answer this question.

What are the holes on the sides of the body of insects called?


Complete the analogy.

Transport of CO2 by plasma : 7% :: Transport of CO2 by bicarbonate ions: ____________.


____________ is the maximum amount of air that the lungs can hold after a maximum forceful inspiration.


What percent of oxygen is transported in a dissolved state by the plasma?


Mark the following statement as True or False. Correct the false statement.

Insects have spiracles on the lower surface of the body.


Match the correct answers with the type of respiration and respiratory substances.

Respiration Types of Substrates
A. Floating respiration I. Proteins
B. Cytoplasmic respiration II. Glucose
C. Protoplasmic respiration III. Carbohydrates and fats

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