wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

In the experiment to prove light is necessary for photosynthesis, why is the plant kept in dark for three to four days?

A
To destroy the chlorophyll molecules.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
To soften the tissues of plants.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
To make the cell permeable to iodine.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
To use up the starch that was produced earlier.
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct option is D To use up the starch that was produced earlier.
In the experiment to prove light is necessary for photosynthesis, the plant is kept in dark for three to four days in order to use up the starch that was produced earlier. It is done to avoid false positive results. Starch is produced only when photosynthesis takes place. So when the plant is again exposed to light, photosynthesis will begin and its end product i.e. starch can be tested using iodine test.

flag
Suggest Corrections
thumbs-up
1
similar_icon
Similar questions
View More
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Photosynthesis
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon