photosythesis experiments

A detailed Summary of photosythesis experiments

Photosynthesis is the process by which chlorophyll - containing organisms - such

as green plants, algae, and some bacteria - capture energy from light and

convert it to chemical energy. For the process of photosynthesis to take place

the organism must contain chloroplasts. Chlorophyll is responsible for the green

color in plants and is also responsible for their ability to photosynthesize.

Photosynthesis is usually carried out in the leaves of green plants, but it can

also take place in other parts of the plant such as the stem. The balanced

chemical equation for photosynthesis is: Sunlight + 6CO2 + H2O --yields-C6H12O6 + 6O2 The purpose of this lab is to answer the question, "Is sunlight

required for photosynthesis?" III.) Experimental Design / Materials and

Methods The first experiment was called "Separating Plant Pigments."

In this first experiment the materials that you need are a piece of green plant

(collard greens), a piece of chromatography paper, solvent, and a test tube. The

first thing you do is take your green plant and fold it up tightly. Second, you

lay the plant on the chromatography paper and smash parts of the plant onto the

paper. Next you mark the outside of the tube with a wax pencil where the bot

proved that photosynthesis did not occur. The plant had to use its stored starch

in the ethanol solution and boil it for one minute. Take the leaf out of the

plant and boil it for one minute in water. Take it out of the water and place it

solution, which is a carbon dioxide indicator, to the test tube nearly to the

the light exposed leaf in water for one minute. Next you boil the same leaf in

had to use its stored food to survive. Without light the plant could not survive

minutes for the see what will happen to the paper. The purpose of this

ethanol and place it on a small petri dish and cover it in iodine. The purpose

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Category: Science

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