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प्रश्न
The diagrams given below represent the relationship between a mouse and a physiological process that occurs in green plants. Study the diagrams and answer the questions that follow
(i) Name the physiological process occurring in the green plant that has kept the mouse alive.
(ii) Explain the physiological process mentioned above.
(iii) Why did the mouse die in bell jar B?
(iv) What is the significance of the process as stated in (i) for life on earth?
(v) Represent the above mentioned physiological process in the form of a chemical equation.
उत्तर
(i) Photosynthesis
(ii) Photosynthesis is a physiological process by which plant cells containing chlorophyll produce food in the form of carbohydrates by using carbon dioxide, water and light energy. Oxygen is released as a by-product.
(iii) In bell jar B, the mouse suffocated and died because it was deprived of oxygen.
(iv) Photosynthesis can be said to be the food giver for all. Green plants synthesise their food by photosynthesis, and all other organisms are dependent on plants for their food directly or indirectly.
(v) 6CO2+12H2O `"light energy"/"chlorophyll"` C6H12O6 +6H2O+6CO2↑
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संबंधित प्रश्न
Give one example of An aquatic plant used in the laboratory to demonstrate O2 liberation during photosynthesis
Give biological explanations for Plants growing in fertilized soil are often found to wilt if the soil is not adequately watered.
Mention the exact location of the following :
Thylakoids
The diagram given below represents an experiment to prove the importance of a factor in photosynthesis. Answer the questions that follow :
Explain the process of Photosynthesis.
Answer the following:
Mention two significant advantages of photosynthesis to the living world as a whole.
Define the following:
Plant pigments
The diagram alongside represents an experiment conducted to prove the importance of a factor in photosynthesis.
Study the same and then answer the questions that follow:
(i) Name the factor being studied in his experiment.
(ii) Why was the plant kept in a dark room before conducting the experiment?
(iii}Why was the experimental leaf then kept in
1. boiling water 2. methylated spirit?
(iv) Name the solution used to test for the presence of starch in the leaf.
(v) What will we observe in the experimental leaf at the end of the starch test?
(vi) Give a balanced chemical equation to represent the process of photosynthesis.
Choose the correct answer:
Which one of the following is the best reason for leaving a plant in a dark place before carrying out experiments on photosynthesis?
Choose the correct answer:
In a typical leaf, photosynthesis occurs mainly in ___________
A plant is kept in a dark cupboard for 48 hours before conducting any experiment on photosynthesis in order to
Name the following:
The organisms that can be called "natural purifiers" of the air.
Complete the following food chains by writing the names of appropriate organisms in the blanks:
Grass → ______ → Snake → ______
What is the importance of photosynthesis in the life of the following:
Animals
Complete the following food chain by writing the names of appropriate organisms in the blanks:
Grass → __________ → Snake → __________
The figure below represents the vertical section of a leaf:
(i) Name the parts 1 to 5.
(ii) How many veins have been shown?
(iii) State the functions of parts 4 and 5.
The green pigment present in the plant is ______.
______ is ATP factory of the cells.
Plants inhale and exhale continuously through the ______.
What is the end product of photosynthesis?
Label the diagram with the raw materials and products of photosynthesis.
