The Effect of Different Colored Light on Plant Growth

Pages: 4 (1185 words) Published: October 1, 2011
The Effect of Different Colored Light on Plant Growth
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I measured each plant on days 7, 9, 11, 13, 15, 20, and 32, after planting. The plants under the green cellophane grew the most in every measurement. The biggest growth spurt for the plants under the green cellophane was from day seven to day nine. By day 13, the plants under the purple and red cellophane started to grow at similar rates as compared with those under the green cellophane. By day 32, the plants underneath the green cellophane were the tallest, with an average height of 38.3 cm. The plants under the clear cellophane experienced the least amount of growth at every measurement except day seven. For the first 15 days, there was no differentiation in number of leaves. By day 32, the plants under the clear cellophane had the most leaves, with an average of 5.9 leaves per plant. Conclusions/Discussion

Different colors of light do seem to lead to a different growth rate. Plants grown under green cellophane grew taller and faster than plants grown under other colors of cellophane. In the future, I would put different types of plants underneath the same color of cellophane to see if the light had the same effect that it did on the pole bean plants. I would also weigh the plants to find out their overall mass. I would also find out how much sugar is being produced by photosynthesis

Cellophane is a thin, transparent sheet made of regenerated cellulose. Its low permeability to air, oils, greases and bacteria makes it useful for food packaging. It's clear, it's handy, and it's wrapped around my candy. The cellophane wrap is one of the most versatile discoveries of the 1900s. Intended to be a protective textile, the cellophane has since found application in many industries as a packaging material and as a semi-permeable film.

Many people mistake cellophane for plastic. The truth is the two materials are of completely different composition. Plastic is a synthetic or semi-synthetic...
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