Elodea Lab

What may have caused these results?

• Elodea was doing photosynthesis.

• Elodea was doing respiration.

• Snails were doing photosynthesis.

• Snails and elodea were doing respiration.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

If the lights are left on, in which test tube would you expect to see the most CO₂ after the experiment?

• A

• B

• C

• D

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

In which test tube will the most photosynthesis take place if the lights are left on?

• A

• B

• C

• D

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

If the lights are turned off, in which test tube(s) would respiration be taking place? Choose all correct answers.

• A

• B

• C

• D

Tags

NGSS.MS-LS1-2

NGSS.MS-LS2-3

If the lights are turned on, in which test tube(s) would photosynthesis be taking place? Choose all correct answers.

• A

• B

• C

• D

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What caused these results?

• The snail used photosynthesis to decrease the amount of O₂

• The snail used respiration to increase the amount of O₂

• The snail used photosynthesis to increase the amount of CO₂

• The snail used respiration to increase the amount of CO₂

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What could be changed in the set up of this experiment to increase the amount of O₂ that results? Choose all correct answers.

• Turn the lights off

• Leave the lights on and add a snail

• Leave the lights on and add a plant

• Leave the lights on and add two plants

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What results would you expect with one snail, one elodea, and the lights on?

• The amount of CO₂ and O₂ would stay about the same.

• The amount of CO₂ would increase and O₂ would decrease

• The amount of CO₂ would decrease and O₂ would increase

• The amount of CO₂ and O₂ would both decrease

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What results would you expect with one snail, one elodea, and the lights off?

• The amount of CO₂ and O₂ would stay about the same.

• The amount of CO₂ would increase and O₂ would decrease

• The amount of CO₂ would decrease and O₂ would increase

• The amount of CO₂ and O₂ would both decrease

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What could be done to increase the amount of oxygen in this experiment? Choose all correct answers.

• Turn off the lights.

• Add another elodea

• Add another snail

• Remove the snail

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3