Topic 8 Lesson 2 Review - How Plants Make Food

What services do plants provide? Select the THREE that apply.

• Plants release carbon dioxide into the atmosphere.

• Plants are a source of medicine.

• Plants are a source of beauty products.

• Plants prevent soil erosion.

Select the TWO processes associated with photosynthesis in a plant.

• Plants use glucose to produce water and carbon dioxide.

• Plants convert the sun's energy into the energy of glucose.

• Chlorophyll absorbs the sun's energy.

• Glucose is broken down into energy the sun can absorb.

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Pablo claims that plants will grow best under green light because plants are green. Pablo’s teacher suggests that Pablo design and conduct an experiment to test the claim.

Pablo places five of the same type of plant, with the same mass, under five different-colored lights. At the end of every five days, he measures and records the mass of each plant. Pablo records his findings in the table.

3. Based on Pablo's experiment, which color of light resulted in the highest plant mass after 20 days?

• Red

• Blue

• Green

• Yellow

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NGSS.MS-LS1-5

Pablo claims that plants will grow best under green light because plants are green. Pablo’s teacher suggests that Pablo design and conduct an experiment to test the claim.

Pablo places five of the same type of plant, with the same mass, under five different-colored lights. At the end of every five days, he measures and records the mass of each plant. Pablo records his findings in the table.

4. What claim is Pablo testing in his experiment?

• Pablo is testing the claim that plants grow faster under green light.

• Pablo is testing the claim that plants need soil to grow.

• Pablo is testing the claim that plants can survive without water.

• Pablo is testing the claim that plants grow better in the dark.

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NGSS.MS-LS1-5

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Pablo claims that plants will grow best under green light because plants are green. Pablo’s teacher suggests that Pablo design and conduct an experiment to test the claim.

Pablo places five of the same type of plant, with the same mass, under five different-colored lights. At the end of every five days, he measures and records the mass of each plant. Pablo records his findings in the table.

What control should Pablo have used for this experiment?

• A. A sixth plant should have been placed under purple light.

• B. The plant under green light should have been given more water.

• C. A sixth plant should have been placed in sunlight.

• D. The plant under blue light should have been moved to the dark.

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Which TWO conclusions about how light color affects the growth of plants can be supported by the evidence shown in the table?

• A. Plants gain the most mass when grown under blue light.

• B. The color of light a plant is given affects its growth.

• C. Plants grow the best under orange light.

• D. Plants grow the same under all colors of light.

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Is Pablo’s claim correct? Do plants grow best under green light?

• Yes, plants grow best under green light.

• No, plants do not grow best under green light. They gained the most mass under blue light.

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NGSS.MS-LS1-5

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Of the 4 substances, select the two that are found in fertilizer and help plants grow. ​

• nitrogen

• glucose

• potassium

• starch

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