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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.
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उत्तर
(i) Light is required for photosynthesis.
(ii) Before beginning the experiment, the plant was kept in dark in order to destarch it, i.e. to remove the pre-existing starch from the storage organs.
(iii)
(1) The leaf was boiled in water to destroy enzymes so that further chemical changes do not take place in the leaf.
(2) The leaf was boiled in methylated spirit to dissolve chlorophyll.
(iv) Chemical equation for the process of photosynthesis:
6CO2+12H2O`"Light"/"Chlorophyll"`C6H12O6+6O2+6H2O
(v)Chloroplast:
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संबंधित प्रश्न
Briefly explain the following terms: Photophosphorylation
The diagram given below represents an experiment to prove the importance of a factor in photosynthesis. Answer the questions that follow :
Give a balanced chemical equation to represent the process of photosynthesis.
Name the following:
The category of organisms that prepare their own food from basic raw materials.
Identify the false statements and rewrite them correctly by changing the first or last word only.
Algae are autotrophs.
Complete the following food chains by writing the names of appropriate organisms in the blanks:
______ → Mouse ______ → Peacock
Give technical term:
The part of the chloroplast where the dark reaction of photosynthesis takes place.
Choose the Correct Answer:
Compensation point means the condition:
Photosynthesis converts energy X into energy Y.
- What are X and Y?
- Green plants are autotrophic in their mode of nutrition. Why?
The role of chlorophyll is to absorb light from the sun.
The raw materials for photosynthesis are ______ and ______.
