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प्रश्न
Describe the process of respiration in the following part of a plant:
Stem
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उत्तर
The stems of herbaceous plants have stomata. The oxygen from air diffuses into the stem of a herbaceous plant through stomata and reaches all the cells, for respiration. The carbon dioxide gas produced during respiration diffuses out into the air, through the same stomata. In woody stems, the bark has lenticels for gaseous exchange.
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संबंधित प्रश्न
The exchange of respiratory gases in the cells of plants occurs by the process of _______________
(a) Osmosis
(b) Diffusion
(c) Glycolysis
(d) exhalation
What is the name of the extensions of the epidermal cells of a root which help in respiration?
Out of photosynthesis and respiration in plants, which process occurs:
(a) all the time?
(b) only at daytime?
Where does the blood absorb oxygen in the human body?
Name the energy currency in the living organisms. When and where is it produced?
Describe the exchange of gases which takes place in the leaves of a plant
(a) during daytime, and (b) at night.
Which contains more carbon dixoide : exhaled air or inhaled air? Why?
Which of the following is not produced during anaerobic respiration in unicellular fungus?
During the deficiency of oxygen in tissues of human beings, pyruvic acid is converted into lactic acid in:
Which of the following is most likely to have a much higher breathing rate?
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?
What is the name of tissues which transport:
water and minerals in a plant?
Veins and arteries carry blood. Which of these carry blood away from the heart?
Out of xylem and phloem, which one carries materials upwards as well as downwards?
Name the body structure concerned with the given functional activity:
Protects the lungs from mechanical injury
Name the body structure concerned with the given functional activity:
Provides actual diffusion of respiratory gases in the lungs.
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 _____________.
____________ refers to a biochemical process of oxidation of organic compounds in an orderly manner for the liberation of chemical energy in the form of ATP.
Which of the following equations is the summary of photosynthesis?
Visit a doctor. Find out about artificial respiration. Ask the doctor:
- When does a person need artificial respiration?
- Does the person need to be kept on artificial respiration temporarily or permanently?
- From where can the person get supply of oxygen for artificial respiration?
