Plants on the Move

April 2005
Science & Children;Apr/May2005, Vol. 42 Issue 7, p49
Academic Journal
The article examines some of the types of responses that plants can have to their environment. Some common stimuli affecting living things are noises, smells, and things one sees or feels. Plants respond to light, gravity, and touch. One can see that the leaves on a houseplant left on a windowsill for a long time will all grow towards the window. Plants sense the object and grow around it to continue growing upward to get the most sunlight possible. Gravitropism is the response of a plant to gravity that causes roots to grow down towards the center of the Earth. The article offers various do-it-yourself-activities that will help in understanding the effect of gravity on plants. The article offers a do-it-yourself-activity that will help in understanding the effect of gravity on plants. Materials needed for this activity include bean seeds, a plastic bowl or container, water, paper towels, a clear plastic cup, and window ledge with sunlight.


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