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प्रश्न
What is the function of the respiratory system?
उत्तर
The main function of the respiratory system is to breathe in oxygen for respiration and to breathe out carbon dioxide, and to provide energy to the body by the breaking down the food particles.
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संबंधित प्रश्न
Carbon dioxide enters into the leaves through tiny pores present on the surface of the leaf called _________.
(a) chlorophyll
(b) chloroplast
(c) stomata
(d) epidermis
Name the areas in a woody stem through which respiratory exchange of gases takes place.
Explain why, a land plant may die if its roots remain waterlogged for a long time.
Name the type of respiration in which the end product is:
Lactic acid
Give one example where such a respiration can occur.
Define breathing. State the differences between breathing and respiration.
What is meant by aquatic animals and terrestrial animals?
Why is diffusion insufficient to meet the oxygen requirements of large multicellular organisms like humans?
Which of the following increases in muscle cells when they are lacking in oxygen?
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
In cockroaches, air enters the body through:
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?
With which human organ system (or human systems) is alveoli associated?
Out of xylem and phloem, which one carries materials only upwards?
Answer this question.
Name the organ of respiration in fishes.
Answer the following in detail.
Explain the process of Cellular Respiration.
Which chemical compound inside a cell can be termed "Currency of Energy"?
State one function of the following:
Mitochondria
Differentiate between the following pairs on the basis of the aspect given in the brackets.
Tidal volume and Residual volume (Quantity of air)
Define respiration.
