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Question
Complete the following food chain by writing the names of appropriate organisms in the blanks:
→ __________ → __________ → Hen → Man
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Solution
→ Grass → Insects → Hen → Man
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A potted plant was taken in order to prove a factor necessary for photosynthesis. The potted plant was kept in the dark for 24 hours. One of the leaves was covered with black paper in the centre. The potted plant was then placed in sunlight for a few hours.
(i) What aspect of photosynthesis was being tested?
(ii) Why was the plant placed in the dark before beginning the experiment?
(iii) During the starch test, why was the leaf
(1) boiled in water
(2) boiled in methylated spirit
(iv) Write a balanced chemical equation to represent the process of photosynthesis.
(v) Draw a neat diagram of a chloroplast and label its parts.
Answer the following:
Give the overall chemical equation of photosynthesis in green plants.
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.
"Oxygen is a waste product of photosynthesis." Comment.
What is the importance of photosynthesis in the life of the following:
Green plants
What is meant by the photolysis of water?
Give technical term:
The main reaction which means the breaking up of water molecules through light.
What will happen if we remove the fish from the aquarium and keep it (with green plants) in a dark place?
