Perky Plants
Michelle Bartels
Hamlin Middle School 44577 188th St., Hayti, SD  57241

The main objective of this experiment was to study the effects of light on plant growth. Research shows that plants need sunlight for photosynthesis.  The plant also requires water and carbon dioxide for the process of photosynthesis to take place. My hypothesis was that with proper plant care, the plant with in the window would grow taller, stronger, and greener than the plant in the closet.

I planted twenty bean seeds in twenty pots.  Ten pots were placed in the window and ten pots were placed in the closet.  All plants were watered every three days. The height of plants was measured daily for 2 months.

After 20 days of growth, 8 out of the 10 plants in the closet were at least 3 cm taller than the plants in the window.  After 40 days of growth, 6 out of the 10 plants in the closet were at least 5 cm taller.  Even though the plants in the closet were taller, they were not as green as the plants in the window.

The average growth of the plant in the closet was 6.5 cm taller than the plant in the window.  The results of this experiment show that light affected bean plant growth.









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