A plant is kept in the dark cupboard for about 48 hours before conducting any experiment on photosynthesis in order to _______________.

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A plant is kept in the dark cupboard for about 48 hours before conducting any experiment on photosynthesis in order to remove starch from the leaves.

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A plant is kept in a dark cupboard for about 48 hours before conducting any experiment on photosynthesis in order to

(a) remove chlorophyll from the leaves.

(b) remove starch from the leaves.

(d) ensure that the leaves are free from starch.

Q. In order to destarch the leaves for an experiment to show that sunlight is necessary for photosynthesis, the:
(1) leaves are kept in alcohol and boiled in a water bath
(2) leaves are soaked in iodine for two hours
(3) plant with the leaves is kept in dark room for 48 hours.
(4) plant with the leaves is exposed to light of a lamp, a night before the experiment

A candidate studied the importance of certain factors in photosynthesis. He took a potted plant and kept it in the dark for over 24 hours. In the early hours of the next morning, he covered one of the leaves with dark paper in the centre only. Then he placed the plant in sunlight for a few hours and tested the leaf which was covered with black paper for starch.

(a) What aspect of photosynthesis was being investigated ?

(b) Is there any control in this experiment ? If so, state it.

(d) Describe step by step, how the candidate proceeded to test leaf for the presence of starch.

A potted plant was taken in order to prove a factor necessary for photosynthesis. The potted plant was kept in the dark for 24 hours. One of the leaves was covered with black paper in the centre. The potted plant was then placed in sunlight for a few hours.

(a) What aspect of photosynthesis was being tested ?

(b) Why was the plant placed in the dark before beginning the experiment ?

(1) boiled in water (2) boiled in methylated spirit.

(d) Write a balanced chemical equation to represent the process of photosynthesis.

(e) Draw a neat diagram of a chloroplast and label its parts.

Q. A plant is kept in a dark cupboard for about 48 hours before conducting any experiment on photysynthesis to

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