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प्रश्न
What are the differences between autotrophic nutrition and heterotrophic nutrition?
उत्तर
| Autotrophic Nutrition | Heterotrophic Nutrition |
| The mode of nutrition in which an organism prepares its own food with the help of simple inorganic materials like water and carbon dioxide from the surroundings is known as autotrophic nutrition. | The mode of nutrition in which an organism cannot prepare its own food and depend upon other organisms for its food is known as heterotrophic nutrition. |
| Food is synthesised from simple inorganic raw materials such as CO2 and water. | Food is obtained directly or indirectly from autotrophs. This food is broken down with the help of enzymes. |
| Chlorophyll is required. | Chlorophyll is not required. |
| Food is generally prepared during day time. | Food can be obtained at all time. |
| All green plants and some bacteria have this type of nutrition. | All animals and fungi have this type of nutrition. |
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संबंधित प्रश्न
Name the following:
The pores through which leaves exchange gases.
Name two inorganic substances which are used by autotrophs to make food.
Which substance is used to remove chlorophyll from a green leaf during photosynthesis experiments?
Why do we boil the leaf in alcohol when we are testing it for starch?
Name the food which gets stored in plant leaves.
Photosynthesis converts energy X into energy Y. What are X and Y?
State the various steps involved in the process of photosynthesis.
How does water from the soil reach the leaves of a plant to be used in photosynthesis?
What will happen to the rate of photosynthesis on a plant under the following circumstances?
(i) cloudy day in morning but bright sunshine in the afternoon
(ii) no rainfall in the area for a considerable time.
(iii) gathering of dust on the leaves
What is photosynthesis?
Explain the mechanism of photosynthesis.
Do all cells use oxygen to produce energy?
Distinguish between: Autotrophic nutrition and Heterotrophic nutrition.
What is meant by parasitic plants?
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
Gas A, obtained above is a reactant for a very important biochemical process which occurs in the presence of sunlight. Identify the name of the process -
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
Opening and closing of stomata is due to ______.
Two green plants are kept separately in oxygen free containers, one in the dark and other in sunlight. It was observed that plant kept in dark could not survive longer. Give reason for this observation.
