Test: 3rd Grade Science

1.

Kathryn planted beautiful tall shrubs in her backyard to create a shady area to sit and read her books. After a few weeks, she notices that her sunflower plant stems are leaning to the left as opposed to standing straight. She sees the leaves just barely reaching the sunlight, and the rest of the plant is engulfed in the shade. A few more weeks pass, and the plants are leaning even more to the left! This time their leaves are almost entirely in the sunshine.

How and why did the plants change in response to the difference in their environment?

The plants did not change as a result of their environment. They changed their position because it was more comfortable.

The plants leaned to the right and upwards to reach the sunlight. Plants need sunlight to make their food.

The plants leaned to the left to reach the sunlight. Plants need sunlight to get tan.

The plants leaned to the left to reach the sunlight. Plants need sunlight to make their food.

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