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An experiment was set up to demonstrate the necessity of carbon (IV) oxide for photosynthesis in a certain green plant as shown below. The plant was...

An experiment was set up to demonstrate the necessity of carbon (IV) oxide for
photosynthesis in a certain green plant as shown below. The plant was first kept
darkness for 48 hours before the experiment.
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a), Why was the plant kept in darkness for 48 hours before the start of this experiment.
b), What was the role of sodium hydroxide?
ci)What was the results shown by the leaf in the flask when it was tested for presence of starch after
the set up was exposed to light for a day?.
ii), Give reasons for your answer in (c) I above
d. Suggest a control for this experiment.
e), Name other two limiting factors in this experiment.

Answers

sharon
a) To destarch the leaf
b) To absorb carbon(IV) oxide
c) i) Starch absent
ii) It lacked carbon(IV) oxide; therefore photosynthesis could not take place;
d) A leaf is enclosed in a flask but instead of sodium hydroxide, water is used or leaf that was
enclosed in the flask is tested for starch.
e) i) Light intensity
ii) Chlorophyll
iii) Temperature
sharon kalunda answered the question on May 22, 2019 at 10:50

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