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प्रश्न
Fill in the following blank with suitable word:
The organs of respiration in man are the _____________.
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उत्तर
The organs of respiration in man are the lungs.
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संबंधित प्रश्न
How are the lungs designed in human beings to maximize the area for exchange of gases?
What are the differences between aerobic and anaerobic respiration? Name some organisms that use the anaerobic mode of respiration.
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 mountaineers carry oxygen with them because ______.
Name the pores in a leaf through which respiratory exchange of gases takes place.
Where does the blood absorb oxygen in the human body?
Explain why, when air is taken in and let out during breathing, the lungs always contain a residual volume of air.
Which of the following increases in muscle cells when they are lacking in oxygen?
During the deficiency of oxygen in tissues of human beings, pyruvic acid is converted into lactic acid in:
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
There are five animals P, Q, R, S and T. The animal P always lives in water and has gills for breathing. The animal Q can stay in water as well as on land and can breathe both, through moist skin and lungs. The animal R lives in soil and breathes only through its skin. The animal S lives on land and breathes through spiracles and tracheae. And animal T lives in water and breathes through its cell membrane.
(a) Which of the animals could be Amoeba?
(b) Which of the animals could be frog?
(c) Which animal could be fish?
(d) Which animal could be grasshopper?
(e) Which animal could be earthworm?
Fill in the following blanks with suitable words:
The ___________ blood cells make antibodies whereas ___________ blood cells help in respiration.
It has been found that people living in very high mountains have many more red corpuscles in their blood than people living in plains. Which one of the following best accounts for this phenomenon?
Out of xylem and phloem, which one carries materials only upwards?
Answer this question.
What are the holes on the sides of the body of insects called?
Name the body structure concerned with the given functional activity:
Prevents food from entering the trachea during swallowing.
What percent of oxygen is transported in a dissolved state by the plasma?
Which of the following is an incorrect statement?
How does aerobic respiration differ from anaerobic respiration?
Yeast is used in wine and beer industries because it respires ______.
