Mystery Science Plant Growth

Why do you think roots are the first thing to grow after a seed cracks open?

• Roots grow first so that they can reach sunlight.

• Roots grow first so that they can reach water.

• Roots grow first so that they can reach air.

• Roots grow first to make cool patterns.

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NGSS.MS-LS2-1

What is a sign that a plant is unhealthy?

• The plant has leaves that are yellow and not green.

• The plant has grown roots.

• The plant has lots of green leaves.

• The plant is growing tall.

Which of the following is true for when a plant needs sunlight? Choose all the correct answers. There may be more than 1 correct answer.

• When a plant is a seed, it needs sunlight to sprout.

• When a plant is a seed, it does not need sunlight to sprout.

• When a plant has leaves, it needs sunlight in order to grow and be healthy.

• When a plant has leaves, it does not need sunlight in order to grow and be healthy.

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NGSS.MS-LS1-5

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If you want to grow a healthy plant, what should you give the plant? Choose all the correct answers. There may be more than 1 correct answer.

• Give the plant plenty of rocks.

• Give the plant plenty of water.

• Give the plant plenty of sunlight.

• Give the plant plenty of soil.

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NGSS.MS-LS1-5

NGSS.MS-LS1-6

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Why does the tomato plant grown in the dark look different than the one grown in the light? Explain in terms of what plants need to grow.

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