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Question
All life on earth Would come to an end if there were no green plants.
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Solution
Green plants manufacture food during the process of photosynthesis and give out oxygen a life-supporting gas for all organisms.
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RELATED QUESTIONS
The diagram below shows two test-tubes A and B. Test-tube A contains a green water plant. Test-tube B contains both a green water plant and a snail. Both testtubes are kept in sunlight. Answer the questions that follow:
(i) Name the physiological process that releases the bubbles of oxygen.
(ii) Explain the physiological process as mentioned above in Q2 (a)(i).
(iii) What is the purpose of keeping a snail in test-tube ‘B’?
(iv) Why does test-tube ‘B’ have more bubbles of oxygen?
(v) Given an example of a water plant that can be used in the above process.
(vi) Write the overall chemical equation for the above process.
The diagram given below represents an experiment to prove the importance of a factor in photosynthesis. Answer the questions that follow :
Explain the process of Photosynthesis.
How does carbon dioxide return to the atmosphere? Explain.
A student in order to study the importance of certain factors of photosynthesis took a potted plant and kept it in the dark for over 24 hours. Then in the early hours of the morning the student covered one of the leaves with black paper in the centre only. Student placed the potted plant in the sunlight for a few hours, and then tested the leaf which was covered with black paper for starch.
(i) What aspect of photosynthesis was being investigated?
(ii) Is there any control in this experiment? If so, state the name.
(iii) Why was the plant kept in the dark before the experiment?
(iv) Describe step by step how the candidate proceeded to test the leaf for the presence of starch.
Choose the correct answer:
The process of photosynthesis occurs by _________
Give some adaptations in green leaf photosynthesis.
What is the importance of photosynthesis in the life of the following:
Animals
Write an experiment to demonstrate that CO2 is necessary for photosynthesis.
The green pigment present in the plant is ______.
Mesophyll contains chlorophyll.
Plants may inhale carbon dioxide for photosynthesis but need ______ for their living.
