Question

In the given photosynthetic experiment, what will happen to the leaf closed with black paper in starch test? Why?

Answer 1

the leaf can't continue photosynthesis as it can't get proper sunlight ...

Answer 2

Dear Student,

◆ Experiment to show sunlight is necessary for photosynthesis -

• For this experiment, leaf is first destarched so that no starch remains in the leaf.
• Now some part of leaf is covered with black paper and other is kept open to sunlight for few days.
• After few days, starch test is done on leaf to detect photosynthesis.

Q. What will happen to the leaf closed with black paper in starch test ?

• As sunlight is essential for photosynthesis, part of leaf covered by black paper will not synthesise starch.
• Therefore, it will show negative starch test.

Thanks dear. Hope this helps you...