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A healthy croton plant bearing
variegated leaves was kept in a dark cupboard
to destarch it after which it was placed in
sunlight for a few hours. One of the leaves
was then plucked and an outline of the leaf
marking the green and the non-green regions
was drawn. The leaf was then tested for
starch. Using the above information, answer
the following questions:
(i) State the aim of the above experiment.
(ii) Name the chemical used for testing the
presence of starch.
(ii) Why is the leaf boiled in water and alcohol
before testing for the presence of starch?
(iv) What change is seen on the leaf after the
starch test ?
(V) Give the chemical equation to represent
the process of starch formation in plants.
Answers
Answered by
4
Answer:
The experiment is conducted to prove that chlorophyll is necessary for photosynthesis.
Answered by
7
Answer:
Explanation: (i) Chlorophyll is necessary for photosynthesis.
(ii) Iodine solution.
(iii) Leaf is boiled in water to kill the cells and boiled in alcohol to remove chlorophyll.
(iv) The green parts of the leaf turned blue-black while non green parts turned brown.
(v) 6 CO2 + 6 H2O + light --> C6H12O6 + 6 O2.
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