Test: 3rd Grade Science

1.

Plants will open their leaves during the daytime to collect sunlight. At night they will close their leaves up to conserve water.

What environmental change is causing the plants to react and make a change?

The plants are reacting to the outdoor temperature.

The plants are reacting to the daily cycle of light and dark.

The plants are not reacting to anything in the environment.

The plants are reacting to the movement of the clouds as they block the sunlight.

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