In an experiment to investigate a factor affecting photosynthesis, a leaf of a potted plant which had been kept in the dark overnight was covered with aluminum foil as shown in the diagram below.

      

In an experiment to investigate a factor affecting photosynthesis, a leaf of a potted plant which had been kept in the dark overnight was covered with aluminum foil as shown in the diagram below.
Biology4120171152.jpg
The set up was kept in sunlight for three hours after which a food test was carried out on the leaf.
a) Which factor was being investigated in the experiment?
b) What food test was carried out?
c) Why was it necessary to keep the plant in darkness before the experiment?

  

Answers


John
a) Light intensity

b) Test for starch

c) To de-starch the leaf or use up all starch in the leaf
johnmulu answered the question on May 1, 2017 at 08:56


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