Matter Cycling and Photosynthesis

Mr. Wee cut the stem of a water plant. He put the plant in a cup full of water under a light.

The students in Mr. Wee’s class observed bubbles coming out of the stem. What are the bubbles being released by the plant?

• hydrogen

• oxygen

• helium

• carbon dioxide

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Photosynthesis is the process that converts carbon dioxide and water into

• sugar and hydrogen.

• sugar and oxygen.

• nitrogen and carbon.

• carbon and oxygen.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Jefferson’s class was studying sunflowers. They learned that sunflowers are able to make their own food. Which parts of a sunflower collect most of the sunlight needed to make food?

• roots

• seeds

• leaves

• flowers

Tags

NGSS.MS-LS1-6

In multicellular organisms, different structures have different functions. Which function is carried out in the leaves of a plant?

• making seeds

• absorbing light

• producing flowers

• absorbing food

Tags

NGSS.MS-LS1-6

What is the function of the stomata of plant leaves?

• Absorbing sunlight.

• Absorbing carbon dioxide needed for photosynthesis.

• Storing sugars produced during photosynthesis.

• Obtaining water needed for photosynthesis.

Tags

NGSS.MS-LS1-6

In addition to oxygen, what do plants produce during photosynthesis?

• light energy

• chlorophyll

• carbon dioxide

• sugar

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

A scientist put several different plants in a glass container. She then placed the container under sunlight. Every hour, she checked the oxygen in the container to see if it changed.

How did the oxygen in the container most likely change?

• The amount of oxygen decreased.

• The amount of oxygen increased.

• The oxygen was transformed into carbon dioxide.

• The oxygen was transformed into water.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What do plants give off as a result of photosynthesis that animals need to breathe?

• Water.

• Protein.

• Heat.

• Oxygen.

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

What are some organisms that can do photosynthesis?

• Plants

• Some fungi

• Some animals

• Some bacteria

Tags

NGSS.MS-LS1-6

Complete the sentence.

Plants use the green molecule called _________ to do photosynthesis.

• glucose

• water

• oxygen

• chlorophyll

Tags

NGSS.MS-LS1-6