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प्रश्न
Where do plants get each of the raw materials required for photosynthesis?
उत्तर
The following raw materials are required for photosynthesis:
- Carbon Dioxide: Plants get CO2 from atmosphere through stomata.
- Water: Plants absorb water from soil through roots and transport to leaves.
- Sunlight: Sunlight, which is absorbed by the chlorophyll and other green parts of the plant.
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संबंधित प्रश्न
What are the differences between autotrophic nutrition and heterotrophic nutrition?
Name two inorganic substances which are used by autotrophs to make food.
Name a gas used in photosynthesis.
Which substance is used to remove chlorophyll from a green leaf during photosynthesis experiments?
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.
Fill in the following blanks with suitable words :
Green plants use .................... and .................... to make food.
Which simple food is prepared first in the process of photosynthesis?
How do plants obtain food?
Why do plants need nitrogen? How do plants obtain nitrogen?
How do guard cells regulate opening and closing of stomatel pores?
Leaves of a healthy potted plant were coated with vaseline. Will this plant remain healthy for long? Give reason for your answer.
Write a chemical equation to show the process of photosynthesis in plants.
The oxygen liberated during photosynthesis by green plants comes from:
(a) glucose
(b) water
(c) carbon dioxide
(d) chlorophyll
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
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
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.
Name the following:
A plant that is partially autotrophic.
