Biology
All life owes its existence to chlorophyll. Give reason.
Photosynthesis
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Answer
Chlorophyll is the green colouring matter found in plants. It is contained in microscopic cell organelles called chloroplasts. Chlorophyll is the foundation site for the photosynthesis in green plants. The initiation of photosynthesis takes place when the chlorophyll molecule traps the light energy. The light energy is then converted into chemical energy in the form of glucose using carbon dioxide (CO2) from the atmosphere, and water (H2O) from the soil. All other organisms, directly or indirectly depend on this food for their survival. The starting point of any food chain is always a plant. If green plants were to suddenly disappear, then so would virtually all life on Earth. Thus, we can say that all life owes its existence to chlorophyll.
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Related Questions
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(a) What aspect of photosynthesis is being tested in the above diagram?
(b) Why was the plant placed in the dark before beginning the experiment?
(c) Write a balanced chemical equation to represent the process of photosynthesis.
(d) What will be the result of starch test when performed on leaf A shown in the diagram?
(e) Draw a neat and labelled diagram of a chloroplast.
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a. What is the objective of this experiment?
b. Will it work satisfactorily? Given reason.
c. What alteration (s) will you make in it for obtaining expected result?
d. Would you take any step before starting the experiment? Describe this step and explain its necessity.
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(a) What is the main aim of the experiment?
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