Light and Photosynthesis

For my one research task project I have decided to see if light is necessary for photosynthesis to take place in green plants. I choose this topic because I wanted to see if light necessary for photosynthesis is really. It is also a very interesting topic because most living things need light to function, survive and grow. Photosynthesis is the physic-chemical process by which green plants use light energy to photosynthesis. When Photosynthesis occurs it takes in the co2 from the atmosphere and releases oxygen as a bi product. In addition the plants provide energy for humans.

For a start I’ll de-starch both my plants by placing them both in a dark cupboard for a minimum of twenty four hours and then test for any starch and take down my findings. I would then place one of my plants out in the sun for a minimum of eight hours. After the eight hours of sun light I will then test another leaf for starch using iodine solution. If the leaf goes dark blue to black there is starch present and if the leaf goes brown, no glucose has formed meaning no photosynthesis has taken place in the leaf.

Review of literature

Plants rely on light energy for photosynthesis to occur. Light is converted to chemical energy, which is then stored as a sugar bond in the plant. Besides the light energy the plant also requires water and carbon dioxide help photosynthesis to be possible. http://www.ask.com/question/why-do-plants-need-light-for-photosynthesis

The amount of sunlight that the plant requires depends on the type of plant. There are many types of plants. Some plants need direct sunlight, while others survive very well when they are left in shady areas. You need to know the type of plant to know how much sun it will require.http://www.ask...

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