Photosynthesis
ICSE · Class 10 · Biology
Practice quiz for Photosynthesis — ICSE Class 10 Biology. MCQs and questions with answers to test your preparation.
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What is the main product formed during photosynthesis?
Which gas is released as a by-product during photosynthesis?
In which part of the chloroplast does the light reaction occur?
Which cells in the leaf contain more chloroplasts?
Sample Questions
Which raw materials are needed for photosynthesis?
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Carbon dioxide, Water, Sunlight
The raw materials for photosynthesis are carbon dioxide (from air), water (from soil), and sunlight (energy source). Oxygen and glucose are products, not raw materials.
What causes stomata to open during the day?
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Guard cells become turgid
During day, photosynthesis in guard cells produces glucose, making cell sap hypertonic. Water enters by endosmosis, making guard cells turgid and causing stomata to open.
Which pigment is most important for photosynthesis?
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Chlorophyll
Chlorophyll is the most important photosynthetic pigment. It traps solar energy and has a magnesium-containing head. Carotene and xanthophyll are accessory pigments.
During which process is water split into hydrogen and oxygen?
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Photolysis
Photolysis is the process of breaking down water molecules into H+ and OH- ions using light energy. This occurs during the light reaction in thylakoids.
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