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प्रश्न
Mention two ways in which photosynthesis is useful to life.
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उत्तर
Advantages of photosynthesis:
(a) To produce food for all the organisms on earth.
(b) Release oxygen which is a life supporting gas.
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संबंधित प्रश्न
How does carbon dioxide return to the atmosphere? Explain.
A student in order to study the importance of certain factors of photosynthesis took a potted plant and kept it in the dark for over 24 hours. Then in the early hours of the morning the student covered one of the leaves with black paper in the centre only. Student placed the potted plant in the sunlight for a few hours, and then tested the leaf which was covered with black paper for starch.
(i) What aspect of photosynthesis was being investigated?
(ii) Is there any control in this experiment? If so, state the name.
(iii) Why was the plant kept in the dark before the experiment?
(iv) Describe step by step how the candidate proceeded to test the leaf for the presence of starch.
A plant is kept in a dark cupboard for 48 hours before conducting any experiment on photosynthesis in order to
Name the following:
The category of organisms that prepare their own food from basic raw materials.
Name the following:
The organisms that can be called "natural purifiers" of the air.
Are the following statement true or false? Give a reason in support of your answer.
Photosynthesis is considered as a process supporting all life on earth.
Choose the correct option.
A cell that lacks chloroplast does not ______.
Choose the correct option.
In presence of high concentration of oxygen, RuBP carboxylase converts RuBP to ______.
Gas exchange takes place in plants using _____.
Which gas evolved during photosynthesis?
1. What happens to the dandelion flower
- During the daytime?
- At night?
2. What is the phenomenon known as?
