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प्रश्न
The exchange of respiratory gases in the cells of plants occurs by the process of _______________
(a) Osmosis
(b) Diffusion
(c) Glycolysis
(d) exhalation
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उत्तर
Diffusion
Air enters the stomatal opening in plant cells, after which the exchange of respiratory gases occurs by diffusion.
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संबंधित प्रश्न
Compare the functioning of alveoli in the lungs and nephrons in the kidneys with respect to their structure and functioning.
During respiration, the plants take CO2 and release O2.
State whether the following statement is true or false:
Fish and earthworm exchange gases during respiration in the same way.
Define breathing. State the differences between breathing and respiration.
What is the function of the respiratory system?
"Respiration is a vital function of the body". Justify this statements.
When air is blown from mouth into a test-tube containing lime water, the lime water turns milky due to the presence of:
During marathon, we sometimes get painful contractions of leg muscles due to the accumulation of one of the following in leg muscles. This is:
When a person breathes in the air, the air enters into his body through an organ A having two holes B in it. The air then passes through the pharynx and larynx and enters into tube C. The tube C divides into two smaller tubes D at its lower end. The two smaller tubes are attached to two respiratory organs E. Each smaller tube divides inside the organs E to form a large number of still smaller tubes called F. The smallest tubes F have air-sacs G at their ends in which gaseous exchange takes place in the body of the person. What are A, B, C, D, E, F, and G?
An animal in which the oxygenation of blood does not take place in the lungs is:
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.
Name the body structure concerned with the given functional activity:
Provides actual diffusion of respiratory gases in the lungs.
Draw a diagram of the human respiratory system and label – pharynx, trachea, lungs, diaphragm and alveolar sac on it.
Respiration refers to ____________.
Which of the following indicates the shift of oxyhaemoglobin dissociation curve due to change in ppC02 in blood?
What is the ppCO2 in alveolar air?
What is common between extensive network of blood vessels around walls of alveoli and in glomerulus of nephron?
Breathing is a process that
- provides O2 to the body.
- breaks down food to release energy.
- helps the body to get rid of CO2.
- produces water in the cells.
Which of the following gives the correct combination of functions of breathing?
Mark the following statement as True or False. Correct the false statement.
Insects have spiracles on the lower surface of the body
Observe the figure carefully and answer the following questions.
- Which process is being tested in the activity?
- What is the result of the activity? Give reasons.
