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Starch is a complex carbohydrate. The presence of starch in leaves or plants can be detected by iodine test. In microscopic studies, starch granules can be seen under magnification inside the cells.

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13y ago
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11y ago

heat the part of the plant in alchohal.this way,all the starch and chlorophyll will be removd if the part of the plant contain either of the the starch or chlorophyll

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12y ago

we can remove starch from the leaf by simple boiling.as starch is carbohydrate it is soluble in water so can easily be removed.

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9y ago

Leave it in the dark for a couple of days.

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11y ago

DFADSFDAFAD

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11y ago

Pee on ut

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Q: How can you remove the starch from a leaf?
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Why did leaf had to be boiled in ethanol when testing leaf for starch?

Ethanol dissolves chlorophyll hence further phtosynthetic activity is stopped in the abscence of light and the leaf becomes transparent (colorless). the colorless leaf takes better stain with iodene while testing for the presence of starch.


What is the purpose of the alcohol in testing a leaf for starch?

It is to remove the chloroplast and dissolve in the alcohol and turn it green.


How is starch produced in the leaf?

When the plant is kept in sunlight the starch is formed in leaf.


Why do you need to remove chlorophyll from a leaf when testing for starch?

Chlorophyll has a function of converting starch into glucose and other simpler plant products.Thats why we have to remove cholorphyll before starting a test for starch.


What is mesnt by destarching a leaf?

Destarching a leaf is a method used in an experiment to prove that there is starch exsisting within the leaf, Destarching a leaf is also a preparation used before the experiment, to remove all starches within the leaf-NR


How do you determine the location of starch in a leaf?

To determine the location of starch in a leaf, one can examine it under the microscope and apply one small drop of iodine to the leaf. The parts of the leaf that turn purple contain starch.


Why did the leaf turn brittle in testing a leaf for starch?

The leaf turns brittle during the testing the leaf for starch because the ethanol extracts the all water content from the leaf.


Does the leaf contain starch?

no


What did you see on the leaf in the test tube when testing for starch?

Use iodine to test a leaf for starch | Plant Physiology | Biology


What is the role of iodine in testing a leaf for starch?

A hot bath of ethanol decolorizes the leaf by washing out the chlorophyll. If the leaf is not decolorized, you cannot see the blue-black stain that results from the iodine reacting with the starch.


Where is starch stored in a variegated Coleus leaf?

The starch in a variegated Coleus leaf is stored in the pigmented parts of the leaf. Coleus is a flowering plant is usually considered an ornamental plant because of its color.


Why boil a leaf for a starch test?

It is to kill the cytoplasm, denaturate the enzyme and makes the leaf become more permeable to the iodine solution, therefor, we have to boil a leaf for starch test