Why do plants absorb carbon dioxide and release oxygen during daytime and dusk?

During the daytime, plants engage in photosynthesis, where they absorb carbon dioxide and release oxygen as a byproduct. At dusk, photosynthesis slows down or stops, and the plant switches to respiration, during which it absorbs oxygen and releases carbon dioxide.

Related Questions:

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  2. Why do gardeners like to use autumn leaves in their soil?
  3. What is the effect of temperature on the rate of transpiration?
  4. Write any three osmotic adjustments in hydrophytes.
  5. What is the pattern of gas exchange between plant and environment at the time of dawn and dusk?
  6. Define the following terms:
  7. Write the difference between:
  8. What is the role of guard cells in stomatal function?
  9. What are the factors that affect the rate of transpiration?
  10. What is the difference between osmosis and diffusion in plants?
  11. What is the role of phloem in plants?
  12. Explain the process of active transport in plants.
  13. State that nitrogen is important in protein synthesis and magnesium for chlorophyll formation.
  14. Explain the internal structure of root and root hair.
  15. Describe how roots take up water and mineral salts by active and passive absorption.
  16. Describe transpiration and relate this process with the cell surface and stomatal opening and closing.
  17. Describe temperature, wind, and humidity as factors affecting the rate of transpiration.
  18. Explain the mechanism of food translocation by the theory of pressure flow mechanism.
  19. Describe the process of gaseous exchange in plants.
  20. Explain osmotic adjustment in plants.