0
What else can I help you with?
Why must leaves be exposed to sunlight for some time before testing for starch?
Leaves need to be exposed to sunlight to undergo photosynthesis, which is the process that produces starch as a storage form of sugar. Without sunlight, photosynthesis cannot occur, and starch will not be produced in the leaf cells. Therefore, exposing leaves to sunlight allows them to accumulate starch, making it easier to test for its presence.
How is starch produced in the leaf?
Starch is produced in the leaf through photosynthesis. The process involves capturing sunlight to convert carbon dioxide and water into glucose. Excess glucose is then stored as starch for later use by the plant.
Why is iodine necassary in an experiment?
Iodine is necessary in experiments because it can be used as an indicator to test for the presence of starch. Iodine forms a blue-black color in the presence of starch, making it easy to detect and confirm the presence of starch in a sample or solution.
What is the Conclusion of testing iodine and starch in expariment?
The conclusion of testing iodine and starch in an experiment is typically that a blue-black color change indicates the presence of starch in the solution. This is due to the formation of a complex between iodine and starch molecules. The test can be used as a qualitative test for detecting the presence of starch in a sample.
Why to destarch a plant?
a leaf (plant) should be destarched before photosynthesis investigations because the starch already present in the plant may mislead the result . hence if a destarched plant is used for the experiment then the amount of starch present at the time of the experiment will be nil and affter the experiment is compleded the amount of starch present in the leaves woul give the rate of photodynthesis as starch id prepared during photosynthesis
Why does the uncovered part of a life turn blue black after putting iodine solution?
It shows the presence of Starch in the section ot the leave. during photosynthesis when Starch is being produce with the presence of sunlight. it is then tested and found that the exposable part of the leave is containing of Starch.
What tests are used to test for the presence of starch?
The iodine test is commonly used to test for the presence of starch. When iodine is added to a sample containing starch, it will turn blue-black in color if starch is present. Another test is the Benedict's test, where a color change from blue to red-orange indicates the presence of reducing sugars, which can be produced from starch through the process of hydrolysis.
Why was sugar found in a experiment were there was starch Silva and water?
Sugar was likely found in the experiment because the starch was broken down into simple sugars through the process of digestion in the saliva. This breakdown of starch into sugars can be catalyzed by enzymes present in saliva, leading to the presence of sugar in the solution.
What happen after you dropped iodine on cotyledons?
When iodine is dropped on cotyledons, it will turn blue or purple in the presence of starch. This color change indicates the presence of starch in the cotyledons. Starch is produced during photosynthesis by plants and stored in cotyledons as a source of energy for germination.
What part of the plant would you test for starch?
You would test the leaves of the plant for starch. Starch is produced through photosynthesis in the leaves, so they are the best part of the plant to test for the presence of this carbohydrate.
What is the product of sunlight in plant process?
The sunlight is made into its product via a process called photosynthesis. The products are glucose which will be converted to starch later and oxygen is produced
Is the starch Ewer just determine starch or starch and other carbohyrate?
The iodine test using a starch ewer is mainly used to detect the presence of starch. It specifically tests for the presence of starch molecules by forming a blue-black color in the presence of starch. It does not differentiate between starch and other carbohydrates.
