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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
The autotrophic mode of nutrition requires ______.
Show with the help of a sketch that the plants are the ultimate source of food.
During photosynthesis plants take in ______ and release ______ gas.
All animals and fungi are autotrophs.
In addition to carbon dioxide and water, state two other conditions necessary for the process of photosynthesis to take place.
Apart from sunlight and chlorophyll, what other things are required to make food by photosynthesis?
Apart from carbon dioxide and water, name four other raw materials which are needed by the plants.
Name the green pigment present in the leaves of a plant.
Name the following:
Organisms that can prepare their own food.
Name the following:
The cells which surround a stomatal pore.
Two similar green plants are kept separately in oxygen free containers, one in dark and the other in continuous light. Which one will live longer? Give reasons.
What are the various conditions necessary for photosynthesis?
The internal energy (cellular energy) reserve in autotrophs is ______.
| 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. |
- What are (i) organism A, (ii) food B, and (iii) food H?
- What are C and D?
- Name (i) green coloured substance E, and (ii) organ F.
- What is the process G?
Explain why, plants have low energy needs as compared to animals.
Name a gas produced in photosynthesis.
Differentiate between an autotroph and a heterotroph.
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 |
The term that is used for the mode of nutrition in yeast, mushroom and bread-mould is ______.
