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Question
Answer the following:
Mention two significant advantages of photosynthesis to the living world as a whole.
Solution
Advantage of photosynthesis :
- To produce food for all the organisms on earth .
- Release oxygen which is a life supporting gas .
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RELATED QUESTIONS
The diagrams given below represent the relationship between a mouse and a physiological process that occurs in green plants. Study the diagrams and answer the questions that follow
(i) Name the physiological process occurring in the green plant that has kept the mouse alive.
(ii) Explain the physiological process mentioned above.
(iii) Why did the mouse die in bell jar B?
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(v) Represent the above mentioned physiological process in the form of a chemical equation.
Given below is an experiment setup to demonstrate a particualr tropic movement in germinating seeds. Study the diagram and answer the questions that follow :
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→ __________ → __________ → Hen → Man
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Complete the following sentence with appropriate word:
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A plant is kept in a dark cupboard for about 48 hours before conducting any experiment on photosynthesis to:
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Gas exchange takes place in plants using _____.
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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.
