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प्रश्न
Short answer question.
What is the source of energy for photosynthesis?
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उत्तर
Light is the ultimate source of energy in photosynthesis because plants take in the sunlight CO2 and H2O and convert it into glucose.
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संबंधित प्रश्न
Put a tick (✓ ) against the most appropriate alternative in the following statement.
Carbohydrates are stored by plants in the form of:
Describe an experiment to prove that sunlight is necessary for photosynthesis.
Enumerate the steps involved in testing a green leaf for the presence of starch.
On a bright sunny day, water weeds growing in an aquarium were actively giving off bubbles of gas. Use this information to answer questions that follow:
- Name the process occurring in the water weed that has resulted in the evolution of these bubbles.
- Of what gas do these bubbles consist?
- Briefly describe the reactions occurring in the leaves of the water weeds leading to the evolution of these bubbles.
- Give an overall balanced chemical equation to represent the process named in (i) above.
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 candidate in order to study the importance of certain factors in photosynthesis took a potted plant and kept it in the dark for over 24 hours. Then in the early hours of the morning, she covered one of the leaves with black paper in the center only. She placed the potted plant in the sunlight for a few hours, and then tested the leaf which was covered with black paper for starch.
- What aspect of photosynthesis was being investigated?
- Is there any control in this experiment? If so, state the same.
- Why was the plant kept in the dark before the experiment?
- Describe step by step how the candidate proceeded to test the leaf for the presence of starch.
Name the following:
In-plant cells, carbohydrates are stored in which form.
The gas given out during photosynthesis is _____.
State whether true or false. If false, correct the statement.
Photosynthesis produces glucose and carbon dioxide.
Name two raw materials for photosynthesis.
