Advertisements
Advertisements
Question
A potted plant with variegated leafes was kept in dark for 24 hours and then placed in bright sunlight. Answer the following questions.
- Which aspect of photosynthesis is being tested in the above diagram?
- Why was the plant kept in the dark for 24 hours?
- After the starch test, what will be the colour of the yellow and green parts of the leaf? Give reasons to support your answer.
Advertisements
Solution
- Photosynthesis requires chlorophyll.
- To make sure there was no starch on the leaves, the plant was maintained in the dark.
- Leaf A's green portion turns blue-black and its pale yellow portion turns brown following the starch test. using the solution of iodine.
APPEARS IN
RELATED QUESTIONS
Give biological reasons for the following statements : In some xerophytes leaves are modified into spines
Define the following:
Organic food
Name the following:
The principle site in a green leaf for photosynthesis.
A candidate studied the importance of certain factors in photosynthesis. He took a potted plant and kept in the dark for over 24 hours. In the early hours of the next morning, he covered one of the leaves with black paper in the centre only. Then he placed the plant in sunlight for a few hours and tested the leaf which was covered with black paper for starch.
Describe step by step, how the candidate proceeded to test the leaf for the presence of starch?
Explain the Term Free Energy.
Give technical term:
What is the percentage of CO2 in the air?
Choose the Correct Answer:
NADP is expanded as
Choose the correct option.
For fixation of 6 molecules of CO2 and formation of one molecule of glucose in Calvin cycle, requires
The green pigment present in the plant is ______.
What are stomata?
