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Which leaf contains starch mayana or hydrilla?
Mayana leaves contain starch, while hydrilla leaves do not contain starch. Starch is a carbohydrate storage molecule that plants produce through photosynthesis.
Which area of the variegated leaf contains starch?
The green areas of a variegated leaf contain starch, as they are the regions where photosynthesis occurs. Starch is produced during photosynthesis and serves as a storage form of energy for the plant.
What is the answer A leaf was tested for starch the iodine solution stayed orange what does that tell you about the leaf?
If the iodine solution stays orange after testing a leaf for starch, it indicates that the leaf does not contain starch. Starch would typically turn the iodine solution blue-black in color. Therefore, the orange color suggests that the leaf did not produce a significant amount of starch through photosynthesis.
What happens to the half of the leaf that did not contain starch?
The half of the leaf that did not contain starch was used up in the process of providing energy for the plant to continue growing and carrying out its metabolic functions. Any excess glucose produced during photosynthesis gets converted into starch and stored for later use.
Do variegated leaves contain starch?
Yes, variegated leaves contain starch. Starch is produced in the chloroplasts of plant cells during photosynthesis, so all green parts of a variegated leaf will have starch. However, the amount of starch present may vary depending on the extent of variegation and the amount of chlorophyll in the leaf.
How do you determine the location of starch in a leaf?
Starch can be located in a leaf by using a staining technique such as iodine staining. Iodine reacts with starch to produce a blue-black color, making it visible under a microscope or to the naked eye in a plant sample. This method helps to identify the presence and distribution of starch in different parts of the leaf.
Why is the leaf discolored when testing for starch?
When testing for starch, the leaf is boiled in alcohol to remove the chlorophyll that may mask the iodine-starch color change. If the leaf turns blue-black after applying iodine, it indicates the presence of starch. If the leaf remains discolored, it suggests that starch is absent, as the iodine did not react with any starch molecules present in the leaf.
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.
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 colour does the leaf turn once iodine is added and is no starch?
When iodine is added to a leaf with no starch, the leaf will remain its original color (usually green). Iodine reacts with starch molecules, turning the leaf blue-black if starch is present.
Why does only half of the leaf turn blue black when tested for the presence of starch with iodine solution?
The half of the leaf that turns blue black in the iodine test for starch is the part that was exposed to light during photosynthesis. Starch is produced in the chloroplasts of plant cells as a result of photosynthesis, so the areas of the leaf that were able to photosynthesize will contain starch and react with the iodine to give a blue-black color.
Does fish have starch?
No, fish does not contain starch. Only plants contain starch.
