Biology, asked by nijhawanshikhabhatia, 1 year ago

In an experiment “Light is necessary for photosynthesis”, why are the following steps done?
(a) The potted plant is kept in darkness for a day.
(b) Leaf is boiled in 70% alcohol. (1 + 1)


aparnaa744: to destarch the leaves the plant is kept in a dark room..... the leaves are boiled in alcohol to remove chlropyll ... it is kept under water bath to deactivate enzymes
nijhawanshikhabhatia: Thanks very helpful

Answers

Answered by manasiriya2003
2

The potted plant is kept in a darkness for few time so that all the starch stored in it is used by the plant and no more food in the form of starch is present in it.

Alcohol is used because alcohol absorves all the chlorophyll present in a leaf and by observing chlorophyll the leaf fades in colour or little bit colourless and the all the green colour of the leaf transferred to the alcohol solution and alcohol solution becomes green in colour.


nijhawanshikhabhatia: Thankyou so much
manasiriya2003: Welcome
manasiriya2003: If you want you can brainliest my answer
Answered by aparnaa744
1
the potted plant is kept in darkness to destarch the leaves.
leaf is boiled to remove chlorophyll and enzymes..
hope you got it..
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