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प्रश्न
Given alongside is the diagram of an experimental set-up:
Would you take any step before starting the experiment? Describe this step and explain its necessity.
उत्तर
Before starting the experiment, it is necessary to destarch the leaves of the plant by keeping the plant in complete darkness for 48 hours. This is because if the plant is not destarched, then the experiment will give false results because starch stored previously may be detected in the leaf placed in the beaker even if no starch is produced during the experiment.
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संबंधित प्रश्न
Complete the following statement by choosing the correct alternative given below :
All animals would die on the earth if there was no ______.
Name the following:
The main mineral constituent of chlorophyll.
Given below is the representation of a certain phenomenon in nature. With four organisms 1-4.
Name the biological process which was the starting point of the whole chain.
Chloroplasts are called energy converters.
Name the following:
The site of light reaction in the cell of a leaf.
Choose the Odd One Out
Write the overall chemical equation for photosynthesis.
Name two plants having variegated leaves.
Match the terms given in column A with column B:
| Column A | Column B | ||
| (a) | Chlorophyll | (i) | Removes/absorbs CO2 |
| (b) | Methylated spirit | (ii) | Tests presence of starch |
| (c) | Potassium hydroxide | (iii) | Traps solar energy |
| (d) | Iodine solution | (iv) | Produces oxygen |
| (e) | Water | (v) | Bleaches chlorophyll |
