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प्रश्न
Explain why, a land plant may die if its roots remain waterlogged for a long time.
उत्तर
The roots of plant can not respire if they remain water logged for a long time. This is because water replaces the air present between the soil particles. Thus, the roots do not get enough air to respire and the plant may die.
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संबंधित प्रश्न
Name one substance which is produced in anaerobic respiration by an organism but not in aerobic respiration.
Out of photosynthesis and respiration in plants, which process occurs:
(a) all the time?
(b) only at daytime?
State whether the following statement is true or false:
Energy can be produced in cells without oxygen.
State whether the following statement is true or false:
Fish and earthworm exchange gases during respiration in the same way.
Name the type of respiration in which the end product is:
Lactic acid
Give one example where such a respiration can occur.
Describe the process of respiration in Amoeba. State whether it is anaerobic respiration or aerobic respiration.
How are oxygen and carbon dioxide exchanged in our body during respiration?
One of the following organisms does not depend on the simple diffusion of gases for breathing and respiration. This organism is:
Which of the following is most likely to have a much higher breathing rate?
Consider the following chemical reactions which take place in different organisms/tissues under various conditions:
(i) Glucose → Respiration ">Ethanol + Carbon dioxide + Energy
(ii) Glucose→ Respiration ">Carbon dioxide + Water + Energy
(iii) Glucose → Respiration "> Lactic acid + Energy
(a) Name one organism which respires according to equation (i) above.
(b) Name one organism which respires according to equation (ii) above.
(c) When and where does respiration represented by equation (iii) above take place?
(d) Which equation/equations represent aerobic respiration?
(e) Which equation/equations represent anaerobic respiration?
(f) Which of the above reactions produces the maximum amount of energy?
What is the name of tissues which transport:
water and minerals in a plant?
Out of xylem and phloem, which one carries materials only upwards?
Choose the odd one out in the following groups of four items each:
Trachea, Ciliated epithelium, Mucous, Diffusion
Match the items in Column A with those in Column B.
|
Column A |
Column B |
|
Cartilaginous |
Epiglottis |
|
Large surface area |
Diaphragm |
|
Breathing movements |
Bronchi |
|
Voice |
Alveoli |
|
Complemental air |
Larynx |
|
Swallowing |
Extra inhalation |
Give suitable explanation for the following :
Why does a person feel breathlessness at higher altitudes?
Rewrite the following statement by selecting the correct option.
During respiration, ____________ gas is given out.
Draw a diagram of the human respiratory system and label - pharynx, trachea, lungs, diaphragm and alveolar sac on it.
During respiration exchange of gases take place in
List the similarities between aerobic and anaerobic respiration.
