Question

andy prepared three potting trays, each made up of ten small pots of soil. he planted one cucumber seed in each small pot. then, he placed one electric heating pad under each tray. he kept one of the heating pads turned off. he turned one of the heating pads to 78°f and the other heating pad up to 88°f. andy observed how long it took for the seed in each pot to germinate. complete the sentence. in this experiment, the pots on a heating pad set to 78°f were part of ______. a control group an experimental group

Explanation:

In an experiment, the control group is the standard condition for comparison, while experimental groups are exposed to modified variables. Here, the turned-off heating pad is the control, and the pads set to 78°F and 88°F are modified temperature variables, making their pots experimental groups.

Answer:

an experimental group