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A leaf was taken from a plant boiled with ethanol and tested with iodine solution what is it tested for?
The iodine test is commonly used to detect the presence of starch in a sample. If the leaf turns blue-black when treated with iodine solution after boiling with ethanol, it indicates the presence of starch in the leaf tissue.
Why starch indicator should be prepared freshly?
To prepare 1% starch indicator weigh 1g of starch powder.Measure 100ml of water and keep it for heating.by using some of 100ml water taken,make a paste of starch in watchglass and mix this paste with little and continuous strring of water which is kept for heating.when all the paste is added,allow for heating 5more minutes then starch indicator is ready for titration.Note:no lumps of starch should present in water
Where does the water come in photosynthesis?
The roots of the cell bring in water for the plant. The plant will then distribute the water.
How many carbon dioxide molecules will be made in photosynthesis?
For every six molecules of carbon dioxide (CO2) taken in during the process of photosynthesis, one molecule of glucose (C6H12O6) is produced. This means that six molecules of CO2 are required to produce one molecule of glucose.
Where are carbon dioxide and oxygen found in the biosphere?
Carbon dioxide is found in the atmosphere, dissolved in bodies of water like oceans, and is taken up by plants during photosynthesis. Oxygen is produced by plants during photosynthesis and is released into the atmosphere. It is also dissolved in bodies of water and utilized by animals for respiration.
How does starch's location in leaves prove photosynthesis?
To clarify: We boiled alcohol with a leaf and tested for starch with iodine (present in the veins), We also covered a leaf with tin foil and came back the next day. The leaf was more green in the veins and more discolored farther away from the veins. This lab was suppose to show us glucose is made by the leaf, but all it proves is that starch is in the veins, right?
How do you know photosynthesis has taken place?
I order to know if photosynthesis has taken place, you need to know whether it has made it's own food (glucose) by adding iodine to one sample of a leaf. If it turned black, then it has glucose in it, if brown, then no glucose in it. Then you need to find if it has stored starch. That's what you find and if you found the answer please continue on this and explain in more.
What would you need if I am doing a science project about putting one plant in the dark inside and one plant outside in the light?
The project is on necessity of light for photosynthesis. Therefore, iodine solution is needd to test the formation of starch in the plant kept in light by photosynthesis. The plant kept in dark will show the absence of starch meaning there by no photosynthesis has taken place in dark.
Where in a plant cell does photosynthesis taken place?
chloroplasts
A leaf was taken from a plant boiled with ethanol and tested with iodine solution what is it tested for?
The iodine test is commonly used to detect the presence of starch in a sample. If the leaf turns blue-black when treated with iodine solution after boiling with ethanol, it indicates the presence of starch in the leaf tissue.
What would be the conclusion after testing a leaf for starch?
Starch is produced by leaves during Photosynthesis, therefore if the leaf has not been exposed to light then it will not contain starch, and so when tested the Iodine will stay Yellow/Brown. Consequently if the leaf has been left in the light Photosynthesis will have taken place and when tested the Iodine will go Blue/Black showing that Starch is present. Hope this helps :)
Why is the leaf tested for starch and not glucose to see if photosynthesis has taken place?
plants produce glucose through photosynthesis, and store it the form of starch which is nothing more than a chain of glucose molecules, the plants can use these starch reserves for energy in a pinch/in the dark
Where is carbon taken in by plants during photosynthesis stored?
Carbon dioxide is taken in by plants, and converted to glucose during photosynthesis. Most plants convert the glucose to starch for storage. It may be retained in the leaves, and sometimes it's stored in a seed, or in a special organ for vegetative reproduction such as a potato tuber.
Is the cell of the cortex where photosynthesis take place?
no , photosynthesis is taken place in chloroplast which contain chlorophyll. hope it helps xxx sorry if it doesn't <3 xx
Which cells in a leaf can photosynthesise?
Any cell that contains chloroplast can do photosynthesis. That's why stem of Cucurbita maxima, Basella rubra etc. and root of Trapa bispinosa,Tinospora cordifolia etc. take part in photosynthesis.
Where does the energy in biodiesel come from?
The energy comes from the plants because photosynthesis is being taken place
What is the difference between dry and wet corrosion?
dry corrosion is taken place in the presence of gases whereas wet corrosion takes place in the presence of moisture in air
