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प्रश्न
Fill in the blank:
______ is the process which replenishes the atmospheric oxygen which the animal life consumes in respiration.
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उत्तर
Photosynthesis is the process which replenishes the atmospheric oxygen which the animal life consumes in respiration.
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संबंधित प्रश्न
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.
The diagram given below represents an experiment to prove the importance of a factor in photosynthesis. Answer the questions that follow : 
Name the factor studied in this experiment.
Define the following:
Quantum
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.
Complete the following food chains by writing the names of appropriate organisms in the blanks:
Grass → ______ → Snake → ______
Give technical term:
The main reaction which means the breaking up of water molecules through light.
Choose the Odd One Out
What is photosynthesis and wherein a cell does occur?
Guard cells of stomata are green but cannot photosynthesize? Give reason.
Assertion (A): All food chains begin with herbivores.
Reason (R): Green plants are heterotrophs.
