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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
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
What advantage over an aquatic organism does a terrestrial organism have with regard to obtaining oxygen for respiration?
The exchange of respiratory gases in the cells of plants occurs by the process of _______________
(a) Osmosis
(b) Diffusion
(c) Glycolysis
(d) exhalation
What would happen if all the green plants disappear from the earth?
Name the areas in a woody stem through which respiratory exchange of gases takes place.
Where in the lungs does gas exchange take place?
Explain why, it is dangerous to inhale air containing carbon monoxide.
Describe the process of respiration in Amoeba. State whether it is anaerobic respiration or aerobic respiration.
Why do the walls of trachea not collapse when there is less air in it?
When air is blown from mouth into a test-tube containing lime water, the lime water turns milky due to the presence of:
A, B and C are three living organisms. The organism A is a unicellullar fungus which can live without air. It is used in the commercial production of an organic compound P from molasses. The organism B is a unicellular animal which lives in water and feeds and moves by using pseudopodia. It breathes through an organelle Q. The organism C is a tiny animal which acts as a carrier of malarial parasite. It breathes and respires through a kind of tiny holes R and air-tubes S in its body.
(a) What are organisms (i) A (ii) B, and (iii) C?
(b) Name (i) P (ii) Q (iii) R, and (iv) S.
(c) Which organism/organisms undergo aerobic respiration?
(d) Which organism/organisms undergo anaerobic respiration?
Choose the odd one out in each of the following groups of four items each:
Oxyhaemoglobin, Carbaminohaemoglobin, Hypoxia, Carboxyhaemoglobin
Name the body structure concerned with the given functional activity:
Transports oxygen to the body cells.
Given below is an overall chemical reaction of a certain process:
C6H12O6→LacticAcid+2ATP+Heat enengy
Name one tissue in which this reaction occur.
____________ 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 is an incorrect statement?
How does aerobic respiration differ from anaerobic respiration?
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.
Exhaled air has more percentage of CO2 than inhaled air
