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प्रश्न
A potted plant with variegated leaves was taken in order to prove a factor necessary for photosynthesis. The potted plant was kept in the dark for 24 hours and then placed in bright sunlight for a few hours. Observe the diagrams and answer the questions:
- What aspect of photosynthesis is being tested in the above diagram?
- Represent the process of photosynthesis in the form of a balanced equation.
- Why was the plant kept in the dark before beginning the experiment?
- What will be the result of the starch test performed on Leaf ‘A’ shown in the diagram? Give an example of a plant with variegated leaves
- Draw a neat labelled diagram of a chloroplast.
उत्तर
- To show that chlorophyll is necessary for photosynthesis.
- \[\ce{6CO2 + 12H2O->[Light energy][Chlorophyll] C6H12O6 + 6H2O + 6O2↑}\]
- The plant is placed in the dark before beginning the experiment to destarch the plant.
- The pale yellow region turns golden brown, and the green region turns bluish or black/deep blue. An example of a plant with variegated leaves is the Oxalis species.
- Chloroplast
APPEARS IN
संबंधित प्रश्न
Chlorophyll in a leaf is required for
Name the following:
The kind of plastids found in the mesophyll cells of the leaf.
Identify the false statement and rewrite it correctly by changing the first or last word only.
Photosynthesis occurs only in cells containing chloroplasts.
Differentiate Between:
Chloroplast and Chlorophyll
A well-watered healthy potted plant with variegated leaves was kept in darkness for about 24 hours. It was then set up as shown in the diagram and exposed to light for about 12 hours. At the end of this time, leaf X and leaf Y were tested for starch. Study the diagram and answer the questions that follow:
(i) Why was the plant initially kept in darkness for 24 hours?
(ii) What is the function of the sodium hydroxide solution in the flask?
(iii) Select the correct leaf from the five available choices shown in the diagram as A, B, C, D, and E. Rewrite the correct answer for the filling in the appropriate letter from the questions that follow:
1. After the starch test, leaf X would look like.
2. After the starch test, leaf Y would look like.
Draw a neat and well-labeled diagram of the Chloroplast.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
PhotoLysis is the reaction which means the breaking up of water molecules.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Photosynthesis occurs in all the cells of a plant.
State the location:
Chlorophyll
The basic functional unit of solar energy which is absorbed by the pigment chlorophyll is ______.
