0
TO kill the plants cell by stopping all chemicals reaction and this allows any liquid to pass through the leaf
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
What could you look for in a coleus leaf to determine if photosynthesis is occurring?
boil it in water then put it in ethanol then put iodine on it the leave will tiurn dark if photosynth is occurring
How do you destarch the leaves of a potted plant?
you boil the leaf and then put it in 3cm cube of petroleum ether and then you put the leaf in a petri dish full of starch
Will salt water boil or will regular water boil?
salt water will boil. also will freshwaer
What is the result of the Test for the presence of starch in a leaf?
Method Half fill a beaker with boiling water and add a large test tube that is a quarter full of ethanol. Allow the ethanol to come to the boil. Do not heat the ethanol in a Bunsen burner flame. This is not safe because ethanol is highly flammable. Take a leaf that has been sitting in good light for at least a few days, and soften on the boiling water for ten seconds or so. Then add to the ethanol and allow to boil for about a minute until all the colour disappears from the leaf. Remove the leaf from the ethanol. Put it back in the hot water to soften for 10 seconds. Spread the leaf out on a white tile and use the iodine solution to test for starch A blue-black colour indicates starch is present. This experiment can be repeated with leaves that have been left in the dark. or have been deprived of carbon dioxide.
When testing a leaf for starch why do you have to boil the leaf in water first?
so the waxy cuticles can rub off the surface of the leaf. a leaf has a cell wall and if you did not put the leaf in the boiling water it would not break down so therefore you would not be able to do a proper starch test on the leaf so the answer to this question is to break the cell wall down so you can test for starch properly i hope i helped you :) yeap
What happen when leaf boil in alcohol what the alcoholl remove from the leaf?
Boiling a leaf in alcohol removes its chlorophyll, so the leaf loses its green colour.
Why do you put leaf in boil water for a few minutes?
To brew you drink. The hot water releases chemicals in the leaf.
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
How long do you boil a cactus leaf before eating it?
10 to 15 minutes
What will happen when you boil a green leaf in a test tube?
It's cell walls will break down and the leaf becomes soft/flaccid
why do we boil a leaf when testing phontosynthesis in a leaf?
to kill the cell which disrupt the cell membranes and softens the cuticle and cell walls
If you boil a maple leaf what color does it turn?
green when its on a tree and brown when it dies
Which reagent would you use to determine the distribution of the carbohydrate stored in leaves?
You need to use iodine to see where the carbohydrates are stored. To make them visible, you must first boil the leaf in water, then boil it in ethanol or methanol.
What could you look for in a coleus leaf to determine if photosynthesis is occurring?
boil it in water then put it in ethanol then put iodine on it the leave will tiurn dark if photosynth is occurring
How to prepare leaf vegetables?
You can use them in stir-fry, sautee them, boil them, wash them and use them in a salad, etc. Or you can use them in pasta or stuff them in chicken with cheese or something!
What can you do to a banana leaf?
you can fashion it into a crude container for water, by folding it and perhaps using a bit of twine, which you can then use to boil water by placing it directly on ..top of glowing hot coals.
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.
