Question

Given below are the steps to be followed for performing starch test on a green leaf
[1] (i) Boil the leaf in alcohol
(ii) Boil the leaf in water
(iii) Dip the leaf in iodine solution
(iv) Wash the leaf in water The correct sequences of steps are
[1] (a) (i), (iv), (ii), (iii)
(b) (ii), (iv), (i), (iii)
(c ) (ii), (i), (iv), (iii)
(d) (iv), (i), (ii), (iii)​

Answer 1

(c) (ii), (i), (iv), (iii)

is the correct option.

Hope it helps you

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Answer 2

(ii), (i), (iv), (iii) are the steps to be followed for performing starch test on a green leaf.

Explanation:

• Steps to Starch testing:
• Boil the leaf in water.
• Boil the leaf in alcohol.
• Wash the leaf in water.
• Dip the leaf in iodine solution.
• A plant energy of sunlight using the chlorophyll molecules during photosynthesis.
• It is able to convert carbon dioxide and water into glucose as a result of this.
• This glucose is delivered to the plant's developing sections for use in respiration, then converted into cellulose, proteins, and oils, and finally stored as starch.
• As a result, you may check the leaf for starches to see if the plants has been photosynthesising.
• Place the leaf in a boiling water with heating alcohol for a few minutes (the boiling ethanol dissolves the chlorophyll.
• Wash the plant in freshwater to hydrate and soft it, then spread it out on a white tile.
• Using a dropping pipette, add iodine solution.
• The iodine turns from brown to aqua after a few minutes in the parts of the leaf that contains sugar.