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What happens to an elodea leaf when added a phenol red solution?
When an Elodea leaf is added to a phenol red solution, the leaf will release oxygen through photosynthesis. The oxygen will cause the phenol red solution to change color, indicating the presence of oxygen production.
How can you test a leaf for carbon dioxide?
To test a leaf for carbon dioxide, you can use a process called leaf disk assay. This involves placing leaf disks in a solution that is low in carbon dioxide, such as sodium bicarbonate solution, and then measuring the rate at which the leaf disks sink to determine the amount of CO2 produced during photosynthesis. Alternatively, you can use a gas sensor to directly measure the amount of carbon dioxide being absorbed or released by the leaf.
What happens when solution of salt or sugar is put on mounted Rhoeo leaf?
When a solution of salt or sugar is put on a mounted Rhoeo leaf, the process of osmosis occurs. Water moves from an area of higher concentration (inside the leaf) to an area of lower concentration (the solution outside the leaf), causing the leaf cells to shrink or swell depending on the concentration of the solution. This can disrupt the normal functioning of the leaf cells and lead to changes in their appearance.
A chemical solution used to test starch is?
the answer to tis would be iodine because it is uses in the method to test for presence of startch in a leaf
What observations do you need to expect if starch is present when testing leaf for starch?
It can be observed that when testing for starch their must be a olour change of blue black after iodine solution was added.Before the colour change was green that changed to blue black of the whole procedure is been carried out.
What happens to an elodea leaf when added a phenol red solution?
When an Elodea leaf is added to a phenol red solution, the leaf will release oxygen through photosynthesis. The oxygen will cause the phenol red solution to change color, indicating the presence of oxygen production.
What will happen to a leaf when you put iodine solution into it?
If iodine solution is added to a leaf, it will turn blue-black in color. This is due to the presence of starch in the leaf which reacts with iodine to produce this color change.
How can you test a leaf for carbon dioxide?
To test a leaf for carbon dioxide, you can use a process called leaf disk assay. This involves placing leaf disks in a solution that is low in carbon dioxide, such as sodium bicarbonate solution, and then measuring the rate at which the leaf disks sink to determine the amount of CO2 produced during photosynthesis. Alternatively, you can use a gas sensor to directly measure the amount of carbon dioxide being absorbed or released by the leaf.
What is the color of the leaf at the end of the experiment that test for starch?
the color of the leaf become brown-black after the iodine solution was added.
Why it is useful to remove the green colour from the leaf before testing iodine solution?
Removing the green color from the leaf before testing iodine solution allows for a clearer observation of the starch present in the leaf. The green color of chlorophyll can mask the color change that indicates the presence of starch when iodine solution is added. By removing the green color, it is easier to identify and analyze the starch content in the leaf.
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
How do you destarch a leaf?
to destarch a leaf, you have to have two things first. A leaf and a bottle of iodine solution. You need iodine solution to separate the sugar molecules (glucose molecules) to the leaf itself, on the upper epidermis of a leaf, on the cuticle.
Why do we dip the leaf in water before adding the iodine solution?
Dipping the leaf in water before adding the iodine solution helps to soften the leaf tissue, making it easier for the iodine solution to penetrate and react with the starch present in the leaf. This process enhances the visibility of the starch by allowing the iodine solution to spread more evenly throughout the leaf.
What happens when solution of salt or sugar is put on mounted Rhoeo leaf?
When a solution of salt or sugar is put on a mounted Rhoeo leaf, the process of osmosis occurs. Water moves from an area of higher concentration (inside the leaf) to an area of lower concentration (the solution outside the leaf), causing the leaf cells to shrink or swell depending on the concentration of the solution. This can disrupt the normal functioning of the leaf cells and lead to changes in their appearance.
What effect the iodine solution have on a leaf?
Iodine solution can test for the presence of starch in a leaf. When iodine solution is applied to a leaf, it will turn blue-black in areas where starch is present. This is because iodine reacts with starch to form a bluish-black complex.
What colour should the leaf turn when iodine is added?
The leaf should turn blue-black when iodine is added, indicating the presence of starch.
Why do we rinse the leaf I water?
The leaf was rinsed in water to rehydrate it. Iodine solution is an aqueous solution of iodine/potassium iodine - potassium tri-iodide; water is needed inside the leaf to enable penetration by diffusion.
