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प्रश्न
Describe an experiment to prove that sunlight is necessary for photosynthesis.
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उत्तर
\[\ce{6CO2 + 12H2O ->[Sunlight][Chlorophyll] C6H12O6 + 6O2 + 6H2O}\]
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संबंधित प्रश्न
The solvent used to dissolve the chlorophyll pigments while testing a leaf for starch is Soda lime.
Phosphate, RNA, Sugar, Nitrogenous base
Put a tick (✓ ) against the most appropriate alternative in the following statement.
Carbohydrates are stored by plants in the form of:
Put a tick (✓ ) against the most appropriate alternative in the following statement.
Stomata are present on the surface of:
Identify the false statements and rewrite them correctly by changing the first or last word only.
Starch produced in a leaf remains stored in it for 2-3 weeks before it is used by other parts of the plant.
A leaf is a food factory. Explain.
Using the destarched plant describe step by step how would you proceed to prove that in the absence of light the leaf cannot manufacture starch?
A healthy croton plant bearing variegated leaves was kept in a dark cupboard to destarch it after which it was placed in sunlight for a few hours. One of the leaves was then plucked and an outline of the leaf marking the green and the non-green regions was drawn. The leaf was then tested for starch. Using the above information, answer the following questions:
- State the aim of the above experiment.
- Name the chemical used for testing the presence of starch.
- Why is the leaf boiled in water and alcohol before testing for the presence of starch?
- What change is seen on the leaf after the starch test?
- Give the chemical equation to represent the process of starch formation in plants.
Name the following:
The chemical substance used to test the presence of starch in the cell of a leaf.
Write the reaction for photosynthesis?
