Photosynthesis Limiting Factors Quiz

What are the three main limiting factors in photosynthesis?

• Temperature, carbon dioxide concentration, and light intensity

• Enzyme activity, carbon dioxide concentration, and light intensity

• Temperature, oxygen concentration, and light intensity

• Enzyme activity, oxygen concentration, and light intensity

How does temperature affect the rate of photosynthesis?

• Increasing temperature increases the rate of photosynthesis in both the light dependent and light independent stages

• Increasing temperature increases the rate of photosynthesis only in the light dependent stage

• Increasing temperature increases the rate of photosynthesis only in the light independent stage

• Increasing temperature does not affect the rate of photosynthesis

What happens to the rate of photosynthesis above a temperature of 25°C?

• The rate of photosynthesis continues to increase

• The rate of photosynthesis decreases due to enzyme denaturation

• The rate of photosynthesis remains constant

• The rate of photosynthesis increases significantly

Which factor is often the limiting factor in photosynthesis due to its low concentration in the air?

• Temperature

• Oxygen concentration

• Carbon dioxide concentration

• Light intensity

How does carbon dioxide concentration affect the rate of photosynthesis?

• Increasing carbon dioxide concentration increases the rate of photosynthesis

• Increasing carbon dioxide concentration decreases the rate of photosynthesis

• Carbon dioxide concentration has no effect on the rate of photosynthesis

• Carbon dioxide concentration only affects the light dependent stage of photosynthesis

What is the effect of increasing light intensity on the rate of photosynthesis?

• Increasing light intensity increases the rate of photosynthesis

• Increasing light intensity decreases the rate of photosynthesis

• Light intensity has no effect on the rate of photosynthesis

• Light intensity only affects the light independent stage of photosynthesis

What happens to the rate of photosynthesis when light intensity is constant but carbon dioxide concentration is increased?

• The rate of photosynthesis increases significantly

• The rate of photosynthesis remains constant

• The rate of photosynthesis decreases

• The rate of photosynthesis is not affected

What is the overall limiting factor when light intensity is constant, but carbon dioxide concentration is low and temperature is high?

• Light intensity

• Carbon dioxide concentration

• Temperature

• Enzyme activity

Which type of leaves are adapted for life in shady conditions?

• Bigger and thicker leaves with more chloroplasts

• Smaller and thinner leaves with fewer chloroplasts

• Bigger and thinner leaves with more chloroplasts

• Smaller and thicker leaves with fewer chloroplasts

What are the adaptations of shade leaves to absorb small amounts of light effectively?

• Thicker cuticle and absence of chloroplasts

• Thinner cuticle and absence of chloroplasts

• Thicker cuticle and presence of chloroplasts

• Thinner cuticle and presence of chloroplasts