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प्रश्न
Photosynthesis is considered as a process supporting all life on earth.
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उत्तर
This process produces food and releases oxygen, both of which are necessary to maintain life on earth.
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संबंधित प्रश्न
What is meant by photosynthesis? Why is it so important in nature?
The following statement is about photosynthesis in a green plant. Write whether it is True or False.
Land plants obtain their carbon dioxide from the atmosphere.
Match the terms of column I with those in column II:
| Column I | Column II |
| (i) Stomata closed | (a) decomposers |
| (ii) Autotrophs | (b) light reaction |
| (iii) By-products of photosynthesis | (c) animals |
| (iv) Photolysis | (d) during night |
| (v) Bacteria and fungi | (e) green plants |
| ( f) oxygen |
Mention one difference between the following on the basis of what is given in bracket.
Respiration and photosynthesis (gas released)
Name the molecules which are called assimilatory power? Why are they called so?
Fill in the blank by rearranging the letter in the bracket.
During photosynthesis plants releases _________ (egxyno).
A plant is kept in a dark room for about 24 hours before conducting any experiment on photosynthesis in order to ______.
Mention four factors required for photosynthesis?
A potted plant with variegated leafes was kept in dark for 24 hours and then placed in bright sunlight. Answer the following questions.
- Which aspect of photosynthesis is being tested in the above diagram?
- Why was the plant kept in the dark for 24 hours?
- After the starch test, what will be the colour of the yellow and green parts of the leaf? Give reasons to support your answer.
