In which of the following does no net gaseous exchange take place between leaves and the atmosphere?
Correct answer: C. Dawn and Dusk
- A. Day
- B. Night
- C. Dawn and Dusk
- D. Midnight
Explanation
At dawn and dusk, the intensity of light is low. At this moment the amount of oxygen released from photosynthesis is equal to the amount of oxygen used in respiration. Similarly, the amount of carbon dioxide released from respiration is equal to the amount of carbon dioxide produced in photosynthesis. It is called "Compensation Point." Hence, option C is correct.
Last updated
Related questions
3-Phosphoglycerate in the presence of ATP and reduced NADP (from the light-independent stage) is reduced to:
3CO₂ + 6NADPH + 9ATP ⎯→ (CH₂O) 3 + 6 NADP + 9 ADP + 9 Pi + 3 H₂O. It is a summary equation of:
A 25 years old female with chronic fatigue was diagnosed with iron deficiency anemia and low blood count. What is the cause of her fatigue?
A aldo sugar that is intermediate between respiration and photosynthesis:
A biochemical process which occurs within a cell to breakdown complex compounds to produce energy is called: