Unit 2 : Photosynthesis, The Starch Test Flashcards
1
Q
During photosynthesis, much of the sugar produced is converted into a chemical called ______ ?
A
Starch, which is stored in the leaves
2
Q
What chemical can be used to detect starch?
A
Iodine
3
Q
Describe the colour change.
A
Changes from orange to blue-black
4
Q
What doesthe presence of starch in a leaf indicate?
A
That photosynthesis has taken place.
5
Q
In the starch test why was the leaf
a)initially placed in boiling water and then
b) transferred to boiling ethanol
A
a) kills the lesf and stops chemical reactions
b) remove chlorophyll
