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प्रश्न
Explain why, plants have low energy needs as compared to animals.
उत्तर
Plants do not need to move from one place to another. Movements in a plant is usually at the cellular level. Thus, a far less amount of energy is required by the plants. Animals, on the other hand, need to move from one place to another in search of food. So, the energy need of animals is much higher than plants.
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संबंधित प्रश्न
The autotrophic mode of nutrition requires ______.
How would you test the presence of starch in leaves?
Give a brief description of the process of synthesis of food in green plants.
what are the by-products of photosynthesis ?
Which of the following events does not occur in photosynthesis?
(a) conversion of light energy into chemical energy
(b) reduction of carbon dioxide to carbohydrates
(c) oxidation of carbon to carbon dioxide
(d) absorption of light energy by chlorophyll
An organism A which cannot move from one place to another, makes a simple food B from the substances C and D available in the environment. This food is made in the presence of a green coloured substance E present in organs F in the presence of light energy in a process called G. Some of the simple food B also gets converted into a complex food H for storage purposes. The food H gives a blue-black colour with dilute iodine solution.
(a) What is (i) organism A (ii) food B, and (iii) food H?
(b) What are C and D?
(c) Name (i) green coloured substance E, and (ii) organ F.
(d) What is the process G?
Water absorption through roots can be increased by keeping the potted plants:
(a) in the shade
(b) in dim light
(c) under the fan
(d) covered with a polythene bag
Which of the following equations is the summary of photosynthesis?
Which of the following statements about the autotrophs is incorrect?
Match Group (A) with Group (B)
| Group A | Group B |
| (a) Autotrophic nutrition | (i) Leech |
| (b) Heterotrophic nutrition | (ii) Paramecium |
| (c) Parasitic nutrition | (iii) Deer |
| (d) Digestion in food vacuoles | (iv) Green plant |
