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प्रश्न
Give suitable biological reasons for the following statement :
All life on Earth is supported by Photosynthesis.
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उत्तर
Photosynthesis is ultimately the source of energy and food for all living beings i.e. directly for plants and indirectly for animals.
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संबंधित प्रश्न
Complete the following by filling in the blanks numbered 1 to 10 with the appropriate word/term:
Photosynthesis involves light reaction and dark reaction. During light reaction, the chlorophyll present in the (1) ______ gets activated by absorbing light energy. This energy splits (2) ______ molecules to (3) ______ and oxygen and releases two electrons. This process is called (4) ______. The (5) ______ ions are picked up by NADP to form (6) ______. The ADP is converted to (7) ______. This process is called (8) ______. During the dark phase, the compound produced at the end of the light reaction reacts with carbon dioxide to form (9) ______. This product is converted to starch. The process is called (10) ______.
Choose the correct answer:
Which one of the following is the best reason for leaving a plant in a dark place before carrying out experiments on photosynthesis?
What is meant by the photolysis of water?
Oxygen given out during photosynthesis comes from water. Explain this statement.
How is the rate of photosynthesis affected when a green plant gets the green light?
Explain the term Plastoquinone.
Name the following:
The process by which plants produce their food.
Name the following:
The immediate product of photosynthesis.
Higher Order Thinking Skill.
Imagine that student A studied the importance of certain factors in photosynthesis. He took a potted plant and kept it in dark for 24 hours. In the early hours of the next morning, he covered one of the leaves with dark paper in the centre only. Then he placed the plant in sunlight for a few hours and tested the leaf which was covered with black paper for starch.
- What aspect of photosynthesis was being investigated?
- Why was the plant kept in the dark before the experiment?
- How will you prove that starch is present in the leaves?
- Name the raw materials needed for photosynthesis.
