Biology
Answer
To show that chlorophyll is necessary for photosynthesis, we will conduct following experiment:
- Select a plant with variegated leaves. Chlorophyll is present in the green portion.
- Put the plant in sunlight for a few hours.
- Pluck any leaf and draw its rough outline indicating the green and non-green portions.
- put the leaf in dilute iodine solution.
We observe that the portion of leaf with chlorophyll turns blue-black showing the presence starch. This shows that photosynthesis took places only in the green part of leaf. Thus, chlorophyll is necessary for photosynthesis.
Related Questions
Explain any three factors that affect photosynthesis.
How will you test the presence of starch in green leaves?
Write a short note on the significance of photosynthesis.
Look at the picture and answer the questions that follow:
- What does this picture show?
- Where are these structures found in a plant?
- What are their functions?