Hone your plant metabolism knowledge and Infrared Skills

Case note: Cactus plants are abundant here on Galapagos. Go back to your first year botany and see if you can explain why the cactus temperature is higher than other nearby plants.
P1080473
CactusIR

Sorry, I cut the top off on the thermal image above. Hint: it should have something to do with Crassulacean (spelling? I have no spell check here!) Acid Metabolism.

2 thoughts on “Hone your plant metabolism knowledge and Infrared Skills

  1. My thinking is that the stomata remain closed during the day to prevent water-loss through evapotranspiration. This process would prevent the plant from undergoing evaporative cooling, which explains the higher plant temperatures. I guess this means the plant also undergoes CO2 uptake at night rather than during the day.

    Like

  2. Yep. Warmer compared to the other non succulent plants which are cooler than air temperature due to evapotranspiration. Actually, I was away from my plant physiology texts when I posted that, but that was sort of the point I was hoping to make.

    Like

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s