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प्रश्न
Oxygen given out during photosynthesis comes from water. Explain this statement.
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उत्तर
During the process of photolysis under light reaction, the water molecule split up to release H+ and OH– ions. These OH– react to liberate oxygen. Thus we can say that oxygen liberated during photosynthesis comes from water.
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संबंधित प्रश्न
Expand the following biological abbreviations: ATP
Mention any two points in which photosynthesis and respiration in plants are opposite to each other.
Fill in the blanks:
The end products of photosynthesis are ______ and ______.
Choose the correct answer:
Photosynthesis is more active in ___________
The number of water molecules required in the chemical reactions to produce one molecule of glucose during photosynthesis is
A candidate studied the importance of certain factors in photosynthesis. He took a potted plant and kept in the dark for over 24 hours. In the early hours of the next morning, he covered one of the leaves with black 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.
Is there any control in this experiment? If so, state it.
Explain, why respiration is said to be a reversed process of photosynthesis?
Complete the following food chain by writing the names of appropriate organisms in the blanks:
Grass → __________ → Snake → __________
Complete the following food chain by writing the names of appropriate organisms in the blanks:
__________ → Mouse → _________ → Peaock
Study the diagram given below and fill in the blanks with suitable words:
In order to prove that carbon dioxide is necessary for
(a) ______, a potted plant is placed in dark for 48 hours to (b) ______ the leaves. A part of a leaf is inserted into a conical flask containing potassium hydroxide solution. This is to absorb (c) ______ from the flask. The plant is then placed in sunlight for a few hours. The experimental leaf is tested for starch. The part of the leaf that was inside the conical flask turns (d) ______, whereas the part of the left outside turns (e) ______ in colour.
