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Question
A plant is kept in a dark cupboard for 48 hours before conducting any experiment on photosynthesis in order to
Options
remove chlorophyll from leaves
remove starch from the leaves
ensure that no photosynthesis occurred
ensure that the leaves are free from starch
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Solution
ensure that the leaves are free from starch
RELATED QUESTIONS
Identify the odd one in each set : Transpiration, Photosynthesis, Phagocytosis, Guttation
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 :
Explain the process of Photosynthesis.
Define the following:
Quantum
How is the rate of photosynthesis affected when a green plant gets the green light?
Explain the Term Free Energy.
Explain the term Plastoquinone.
State whether true or false. If false, correct the statement.
Plants lose water when the stomata on leaves are closed.
Oxygen is used for the synthesis of protein and fertilizers.
An organism A which cannot move from one place to another makes a simple food B from the substances C and D available in the environment. This food is made in the presence of green-colored substance E present in organs F in the presence of light energy in a process called G. Some of the simple food B also gets converted into a complex food H for storage purposes. Does this food give a blue-black color with iodine solution?
a. What is
- organism A
- food B?
- food H?
b. What are C and D?
c. Name green-colored substance E and organ F.
d. What is the process G?
