Question

1. what if you oversupply one input for photosynthesis? would that automatically increase production? explain.
2. what happens to respiration if photosynthesis slows and therefore does not produce enough plant sugars?

Explanation:

For question 4: Photosynthesis has multiple inputs (light, \(CO_2\), water). If one input is oversupplied (e.g., too much \(CO_2\) without enough light or water), other factors become limiting. The rate of photosynthesis is governed by the law of limiting factors (Liebig's law). So, oversupply of one input won't automatically increase production.
For question 5: Respiration uses plant sugars (\(C_6H_{12}O_6\)) as a substrate (\(C_6H_{12}O_6+6O_2
ightarrow6CO_2 + 6H_2O+\text{Energy}\)). If photosynthesis slows and less sugar is produced, there is less substrate for respiration. So, the rate of respiration will decrease as there is not enough fuel (sugar) for the respiratory process.

Answer:

1. No. Photosynthesis is limited by the factor in shortest supply (Liebig's law of limiting factors). If one input (e.g., \(CO_2\)) is oversupplied but another (e.g., light or water) is limited, production won't increase.
2. Respiration rate decreases. Respiration uses plant - produced sugars as substrate. Less sugar from slow photosynthesis means less fuel for respiration.