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प्रश्न
Distinguish between: Autotrophic nutrition and Heterotrophic nutrition.
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उत्तर
| Autotrophic nutrition | Heterotrophic nutrition |
| 1. It is the mode of nutrition in which organisms produce their own organic food. | It is the mode of nutrition in which organisms depend on other organisms for their food. |
| 2. Organisms producing their own food are known as autotrophs. | Organisms depending on others for food are known as heterotrophs. |
| 3. Autotrophs use simple inorganic substances present in the surroundings to produce food. | Heterotrophs depend on other organisms to get their food. |
| E.g. Plants | E.g. Fungi |
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संबंधित प्रश्न
What are the differences between autotrophic nutrition and heterotrophic nutrition?
All animals and fungi are autotrophs.
Which of the following is an autotroph?
Green plant or Man?
Apart from sunlight and chlorophyll, what other things are required to make food by photosynthesis?
Name a gas used in photosynthesis.
The leaves of a plant first prepare food A by photosynthesis. Food A then gets converted into food B. What are A and B?
Name the green pigment present in the leaves of a plant.
Which simple food is prepared first in the process of photosynthesis?
Name the food which gets stored in plant leaves.
What are autotrophs? Give one example of autotrophs.
State the various steps involved in the process of photosynthesis.
The cells which surround a stomatal pore.
Write a chemical equation to show the process of photosynthesis in plants.
Name the raw materials required for photosynthesis. How do plants obtain these raw materials?
The opening and closing of the stomatal pores depends upon:
(a) oxygen
(b) water in guard cells
(c) temperature
(d) concentration of CO2 in stomata
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?
List the three events that occur during the process of photosynthesis. Explain the role of stomata in this process.
The Figure shown below represents an activity to prove the requirements for photosynthesis. During this activity, two healthy potted plants were kept in the dark for 72 hours. After 72 hours, KOH is kept in the watch glass in setup X and not in setup Y. Both these setups are air tight and have been kept in light for 6 hours. Then, Iodine Test is performed with one leaf from each of the two plants X and Y.
Which of the following steps can be followed for making the apparatus air tight?
- placing the plants on glass plate
- using a suction pump.
- applying aseline to seal the bottom of jar.
- creating vacuum
Differentiate between an autotroph and a heterotroph.
