मराठी

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
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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

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


Fill in the following blank with suitable word:

Gills are the breathing organs in ___________.


"Respiration is a vital function of the body". Justify this statements.


Which of the following statements are true about respiration?
(i) during inhalation, ribs move inward and diaphragm is raised.
(ii) the gaseous exchange takes place in the alveoli.
(iii) haemoglobin has greater affinity for carbon dioxide than oxygen.
(iv) alveoli increase surface area of the exchange of gases


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?


Out of xylem and phloem, which one carries materials upwards as well as downwards?


Fill in the following blanks with suitable words:

The ___________ blood cells make antibodies whereas ___________ blood cells help in respiration.


There is a pair of bean-shaped organs P in the human body towards the back, just above the waist. A waste product Q formed by the decomposition of unused proteins in the liver is brought into organ P through blood by an artery R. The numerous tiny filters S present in organ P clean the dirty blood by removing the waste product Q. The clean blood goes into circulation through a vein T. The waste substance Q, other waste salts, and excess water form a yellowish liquid U which goes from organ P into a bag-like structure V through two tubes W. This liquid is then thrown out of the body through a tube X.
(a) What is (i) organ P, and (ii) waste substance Q?
(b) Name (i) artery R, and (ii) vein T.
(c) What are tiny filters S known as?
(d) Name (i) liquid U (ii) structure V (iii) tubes W, and (iv) tube X.


In the lungs what substance is removed from the body?


Choose the odd one out in the following groups of four items each:

Ethyl alcohol, Carbon dioxide, Starch, Oxygen


What is the normal percentage composition of gases in inspired and expired air respectively?


Given below is an example of a certain structure and its special functional activity: 

"Kidney and excretion".

Fill in the blanks on a similar pattern.

Pleura and _____________.


Given below is an example of certain structure and its special functional activity: 

"Kidney and excretion".

Fill in the blanks on a similar pattern.

Diaphragm and _____________.


State one function of the following: 

Intercostal muscles


State one function of the following: 

Pleural fluid


Complete the analogy.

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


Name the substances whose build-up in the muscles during vigorous physical exercise may cause cramps?


Sometimes we get painful cramps in our leg muscles after running for a long time due to the accumulation of:


Sometimes when we do heavy exercise, anaerobic respiration takes place in our muscle cells. What is produced during this process?


With the reference to four gases CO2, CO, Cl2 and O2, which one of the options in the table is correct?


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