A botanist wants to see how different colored light waves influence the growth of pea plants. She puts the same number of seeds into three identical pots with the same kind

and amount of soil. She then gives them the same amount of water every three days for

the length of the experiment. One pot is placed into a dark windowless closet. Another

pot is left on the windowsill, and the third is placed under a lamp with a green bulb. She records the height of each plant every day for three months.

1.Draw a diagrammatic illustration of the botanist’ experimental setup making sure that

the experimental and the control groups are clearly shown. (14)