Advertisements
Advertisements
Question
Which one chemical reaction occurs during photosynthesis?
Options
Carbon dioxide is reduced and water is oxidised
Water is reduced and carbon dioxide is oxidised
Both carbon dioxide and water are oxidised
Both carbon dioxide and water are reduced
Solution
Carbon dioxide is reduced and water is oxidised
APPEARS IN
RELATED QUESTIONS
The following diagram demonstrates a physiological process taking place in green plants. The whole set up was placed in bright sunlight for several hours. Study the diagram and answer the questions that follow
(i) What aspect of the physiological process is being examined?
(ii) Explain the physiological process mentioned in (i) above.
(iii) Label the parts numbered 1 and 2 in the diagram.
(iv) Write a well-balanced chemical equation for the physiological process explained in (ii) above.
(v) What would happen to the rate of bubbling of the gas if a pinch of sodium bicarbonate is added to the water in the beaker? Explain your answer.
The diagram below shows two test-tubes A and B. Test-tube A contains a green water plant. Test-tube B contains both a green water plant and a snail. Both testtubes are kept in sunlight. Answer the questions that follow:
(i) Name the physiological process that releases the bubbles of oxygen.
(ii) Explain the physiological process as mentioned above in Q2 (a)(i).
(iii) What is the purpose of keeping a snail in test-tube ‘B’?
(iv) Why does test-tube ‘B’ have more bubbles of oxygen?
(v) Given an example of a water plant that can be used in the above process.
(vi) Write the overall chemical equation for the above process.
Mention two ways in which photosynthesis is useful to life.
The following statement is about photosynthesis in a green plant. Write whether it is True or False.
Land plants obtain their carbon dioxide from the atmosphere.
Choose the correct answer:
The process of photosynthesis occurs by _________
The production of starch, and not glucose, is often used as a measure of photosynthesis in leaves because
Name the following:
The first form of food substance produced during photosynthesis.
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.
The rate of photosynthesis continues to rise as long as the intensity of light rises.
Name the membrane that connects thylakoid of one granum With the other granum.
What is meant by the photolysis of water?
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Leaves are broad and flat to increase the surface area for photosynthesis.
Write the functional activity of the following structure:
Stroma
To which directional stimuli do
- roots respond
- shoots respond?
Mesophyll contains chlorophyll.
A plant is kept in a dark room for about 24 hours before conducting any experiment on photosynthesis in order to ______.
Plants inhale and exhale continuously through the ______.
Which gas evolved during photosynthesis?
1. What happens to the dandelion flower
- During the daytime?
- At night?
2. What is the phenomenon known as?
Label the diagram with the raw materials and products of photosynthesis.