Photosynthesis and Plant Adaptations Quiz

Why do C3 plants like wheat thrive in wet and cold climates?

• They have a high tolerance for drought.

• They can efficiently perform photosynthesis with low water loss.

• They have a special adaptation to store water.

• They can close their stomata completely.

What is the role of Rubisco in the Calvin cycle?

• It stores energy in the form of ATP.

• It helps in the breakdown of glucose.

• It combines CO2 with RuBP to form PGA.

• It binds with oxygen to produce glucose.

What happens during photorespiration?

• The plant absorbs more sunlight for photosynthesis.

• Rubisco binds with oxygen, leading to the formation of toxic phosphoglycolate.

• Rubisco binds with CO2 to produce more glucose.

• The plant produces more ATP and NADPH.

How do plants minimize photorespiration?

• By closing their stomata completely.

• By keeping oxygen concentrations low in their leaves.

• By increasing the number of chloroplasts.

• By reducing the amount of sunlight absorbed.

What is the primary function of stomata?

• To facilitate gas exchange and transpiration.

• To protect the plant from pests.

• To absorb nutrients from the soil.

• To store water for the plant.

Why is transpiration not entirely negative for plants?

• It reduces the plant's growth rate.

• It allows for the mass flow of mineral nutrients.

• It increases the plant's water storage capacity.

• It helps in the absorption of sunlight.

What is Kranz anatomy?

• A type of leaf structure in C3 plants.

• An adaptation in C4 plants to minimize photorespiration.

• A process of water storage in plant roots.

• A method of nutrient absorption in leaves.

How do C4 plants minimize photorespiration?

• By closing their stomata during the day.

• By concentrating CO2 around Rubisco.

• By storing oxygen in their leaves.

• By reducing the number of chloroplasts.

What is the first stable compound in the C4 pathway?

• RuBP

• Oxaloacetate

• Glucose

• PGA

What happens to pyruvic acid in the C4 pathway?

• It is used to regenerate PEP.

• It is stored as a form of energy.

• It is converted into glucose.

• It is broken down into oxygen.