10 Questions
What is the significance of the green part of a variegated leaf in the context of the iodine starch test?
The green part of the leaf turns iodine from brown to blue-black, indicating the presence of starch.
How does the presence of chlorophyll affect the ability of a leaf to carry out photosynthesis?
Chlorophyll enables the leaf to carry out photosynthesis.
Why does the yellow part of a variegated leaf test negative for starch?
The yellow part lacks chlorophyll, so it cannot carry out photosynthesis to form starch.
Explain why the green part of a variegated leaf is used as a control in experiments related to photosynthesis.
The green part serves as a control because it has all the necessary conditions for photosynthesis to occur.
Describe how variegated leaves demonstrate the role of chlorophyll in photosynthesis.
Variegated leaves show that parts with chlorophyll turn iodine blue-black, indicating starch formation, while parts without chlorophyll do not.
What happens to iodine when it comes in contact with starch in a variegated leaf's green part?
It turns from brown to blue-black.
Why does the yellow part of a variegated leaf test negative for starch?
It lacks cells that conduct photosynthesis.
What role does the green part of a variegated leaf play in the iodine starch test?
It serves as a positive control.
Why is the green part of a variegated leaf considered to have all the conditions required for photosynthesis?
As it undergoes photosynthesis and forms starch.
What happens to iodine when it is applied to the yellow part of a variegated leaf?
It remains colorless.
Learn about variegated leaves and how photosynthesis occurs in different parts of the leaf. Find out how the starch test can determine the presence of chlorophyll in variegated leaves.
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