Compare data from prior lessons. Parts of some animals change and meet their immediate needs to survive. Plants adapt to their environment when conditions change. Observe a plant over a period of a day or longer. Note the change of position as the direction of light changes.
Plants depend on the sun and animals depend on plans.
Ask how can we verify plants really need the sun. Suggest and experiment. Keep a journal of observations. Keep all other conditions for the two plants the same. Plant that is in dark will turn yellow and not grow .