Author Question: During glacial periods in the early evolution of land plants, which of the follo (Read 885 times)

Sandstorm

  • Sr. Member
  • ****
  • Posts: 268
During glacial periods in the early evolution of land plants, which of the following would have been a beneficial adaptation regarding the number of stomata per unit surface area, and what accounts for it?
A) increased numbers of stomata, to maximize absorption of increasing levels of atmospheric CO2
B) increased numbers of stomata, to maximize ability to absorb low levels of atmospheric CO2
C) decreased numbers of stomata, to retain CO2 produced by the chloroplasts
D) decreased numbers of stomata, to maximize absorption of low levels of atmospheric CO2



Hungry!

  • Hero Member
  • *****
  • Posts: 1,071
Try B, I remember this on my test last week. I'm sure I got it right ;)



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

Sandstorm

  • Sr. Member
  • ****
  • Posts: 268
Big respects :D Best homework site every.



 

Did you know?

Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

For a complete list of videos, visit our video library