Factors That Affect Photosynthesis

How does temperature affect photosynthesis?

• Increases the rate at which enzymes work
• Gives the plant energy to perform photosynthesis
• Stops certain enzymes that interfere with photosynthesis working

What is a limiting factor?

• The factor which increases the rate of a reaction
• The factor that limits the reaction rate
• The factor that limits the rate at which an enzyme is destroyed

Increasing temperature can increase enzyme activity to a certain point. Then what happens?

• The enzymes have completed all the reactions so stop
• The enzymes have been denatured or destroyed
• Nothing - the rate continues to increase all the time

If a plant receives more carbon dioxide, what happens to the rate of photosynthesis?

• Increases
• Decreases
• Stays the same

Tags

NGSS.HS-LS2-5

How can greenhouses increase the rate of photosynthesis?

• Controlling and trapping heat to increase photosynthesis
• Stopping rainfall affecting plant growth
• Surrounding plants in the colour green makes them more likely to photosynthesise
• Plants are only given what they need instead of just taking everything they can find

Tags

NGSS.HS-LS1-5

If carbon dioxide is completely removed from a plant’s environment, what would you expect to happen to the plant’s production of high-energy sugars (rate of photosynthesis)?

• Sugar production will likely increase.
• Sugars will not be produced.
• The rate of sugar production will decrease .
• Fewer sugars will be produced at first, but then the plant will recover.

Tags

NGSS.HS-LS2-5

Which conclusion best matches the trends shown on the graph?

• Bean plants produce more ATP than corn plants.
• Corn plants require more oxygen than bean plants.
• Corn plants release more carbon dioxide than bean plants.
• Corn plants produce sugars at a faster rate than bean plants.

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

Which lettered graph represents the affect of light intensity on photosynthetic rate?

• A

• B

• C

• D

Tags

NGSS.HS-LS1-5

Which lettered graph represents the effect of carbon dioxide gas on photosynthetic rate?

• A

• B

• C

• D

Tags

NGSS.HS-LS2-5

Which lettered graph represents the effect of temperature on photosynthetic rate?

• A

• B

• C

• D

Tags

NGSS.HS-LS1-5