Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Plants' co2 balance

  1. Aug 14, 2009 #1

    EnumaElish

    User Avatar
    Science Advisor
    Homework Helper

    Do plants absorb as much carbon-dioxide as they release? Is there a co2 balance, deficit, or surplus in the plant world?
     
  2. jcsd
  3. Aug 14, 2009 #2

    Ouabache

    User Avatar
    Science Advisor
    Homework Helper

    CO[itex]_{2}[/itex] is one of the basic inputs for plant growth, along with water, nutrients & energy (sunlight). The output (of photosynthesis) is glucose and O[itex]_{2}[/itex]. Plants convert the glucose into various molecules (e.g. starch, cellulose, lignin, pectin) for anatomical structures (leaves, stems, roots) and an important part of its physiology (biochemistry). Plants do respire; deriving energy from stored molecules (e.g. glucose) and releasing CO[itex]_{2}[/itex] & energy, to accomplish physiological functions (e.g. transport of nutrients, cell division, hormonal regulation).

    We may deduce intuitively that more CO[itex]_{2}[/itex] is taken up by plants during photosynthesis than there is released during respiration.
    That is why forests and the ocean's algae are often referred to as Carbon sinks. To show this directly we would need to write the biochemical equations (for photosynthesis and respiration) as a function of time and mass of living plant tissue.
     
    Last edited: Aug 15, 2009
  4. Aug 16, 2009 #3

    EnumaElish

    User Avatar
    Science Advisor
    Homework Helper

    Thank you for the answer.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Plants' co2 balance
  1. Ancestor of plant? (Replies: 3)

  2. Plant stomota (Replies: 2)

  3. Respiration in plants (Replies: 1)

Loading...