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प्रश्न
State the three common features of all the respiratory organs like skin, gills and lungs.
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उत्तर
All the respiratory organs like skin, gills and lungs have three common features.
(a) They have a large surface area to get enough oxygen.
(b) They have thin walls for easy diffusion and exchange of respiratory gases.
(c) They have a rich blood supply for transporting respiratory gases.
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संबंधित प्रश्न
Given below are the end products of different reactions involving glucose.
Write the reaction number in front of the following:
(i) Anaerobic reaction =
(ii) Reaction in the human muscles =
(iii) Aerobic respiration =
(iv) Reaction in the plant cells =
(v) Reaction in the liver
What are the differences between aerobic and anaerobic respiration? Name some organisms that use the anaerobic mode of respiration.
How are the alveoli designed to maximise the exchange of gases?
What is the name of tiny air-sacs at the end of smallest bronchioles in the lungs?
Fill in the following blank with suitable word:
Gills are the breathing organs in ___________.
Name the type of respiration in which the end product is:
Lactic acid
Give one example where such a respiration can occur.
What is the function of the 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
Which of the following is known as the energy currency of the cells in biology?
Veins and arteries carry blood. Which of these carry blood away from the heart?
What happens to the glucose which enters the nephron tubule alongwith the filtrate?
With regard to the respiratory system and the process of respiration in man, answer the following question :
Give the overall chemical equation to represent the process of respiration in humans.
With regard to the respiratory system and the process of respiration in man, answer the following question:
What is meant by :
- Residual air and
- Dead air space
List the organs of Human respiratory system.
Answer the following question.
A gas is released during photosynthesis. Name the gas and also state the way by which the gas is evolved.
What is common between extensive network of blood vessels around walls of alveoli and in glomerulus of nephron?
On a very cold morning, Boojho and Paheli were talking with each other as they walked down to their school. They observed that the air coming out of their mouth looked like smoke. They were amused and wondered how it happened. Help them find the answer.
With the reference to four gases CO2, CO, Cl2 and O2, which one of the options in the table is correct?
