PhotoRespiration

Photorespiration occurs when ____ is used in the Calvin Cycle instead of Carbon Dioxide gas.

• Water Vapor

• Oxygen Gas

• Nitrogen Gas

• Hydrogen Ion

Tags

NGSS.HS-LS2-3

Photorespiration has a 'net negative' affect on a plant because...

• A plant toxin is produced.

• A 'useless' product is produced.

• A 'harmful to humans' form of glucose is produced.

Plants that DO NOT have a way of 'preventing' Photorespiration are known as...

• C3 Plants

• C4 Plants

• CAM Plants

• C2 Plants

CAM and C4 Plants each prevent Photorespiration by...

• Storing CO₂ in a form that can be used during times their stomata are closed.

• Keeping their stomata open at all times to prevent low CO₂ levels.

• A special carrier protein that prevents the entrance of Oxygen into leaves.

• Altering (alosteric inhibition) the enzyme RUBISCO to prevent photorespiration.

C3 Plants are a higher risk of Photorespiration when....

• It is hot and dry outside.

• It is cool and damp outside.

• It is hot and damp outside.

• It is cool and dry outside.

Oxygen and Carbon Dioxide enter a leaf through the...

• Stomata

• Cuticle

• Leaf Margin

• Guard Cells

These cells will control the opening and closing of the 'stomata'.

• Palisade Mesophyll Cells

• Phloem Cells

• Xylem Cells

• Guard Cells

Tags

NGSS.HS-LS1-3

NGSS.HS-LS1-5

Photorespiration most affects the...

• Light Dependent Reactions of Photosynthesis

• Light Independent Reactions of Photosynthesis

Plants close their stomata to conserve...

• Oxygen

• Carbon Dioxide

• Water

• Energy

Tags

NGSS.MS-LS2-1

For C3 plants, photorespiration is a bigger problem for plants on...

• Hot Dry Days

• Hot Humid Days