Photosynthesis: Practice Questions

• a.By active transport through the guard cells into the palisade mesophyll.
• b.By diffusion through the stomata into the intercellular air spaces of the spongy mesophyll.
• c.By transpiration pull through the xylem vessels from the roots.
• d.By osmosis through the cuticle of the upper epidermis.

• a.The rate of bubble production increases as the distance from the light source decreases, until another factor becomes limiting.
• b.The rate of bubble production remains constant regardless of the light intensity.
• c.The rate of bubble production increases linearly with light intensity without ever reaching a plateau.
• d.The rate of bubble production decreases as the light intensity increases.

• a.Chlorophyll absorbs carbon dioxide and converts it into oxygen and glucose.
• b.Chlorophyll facilitates the diffusion of water from the xylem to the mesophyll cells.
• c.Chlorophyll acts as an enzyme to speed up the breakdown of glucose into energy.
• d.Chlorophyll absorbs light energy and converts it into chemical energy for the formation of carbohydrates.

• a.\(C_{6}H_{12}O_{6} + 6O_{2} \rightarrow 6CO_{2} + 6H_{2}O\)
• b.\(6CO_{2} + 6H_{2}O + \text{light energy} \rightarrow C_{6}H_{12}O_{6} + 6O_{2}\)
• c.\(6CO_{2} + 12H_{2}O \rightarrow C_{6}H_{12}O_{6} + 6O_{2} + 6H_{2}O\)
• d.\(6CO_{2} + 6H_{2}O \rightarrow C_{6}H_{12}O_{6} + 6O_{2}\)

Write your answer out first, then check it against the worked solution.

Write your answer out first, then check it against the worked solution.

Write your answer out first, then check it against the worked solution.

Write your answer out first, then check it against the worked solution.

Write your answer out first, then check it against the worked solution.