Plants need to take in carbon dioxide from the atmosphere and release oxygen, but the waxy material that surrounds the plant to prevent water loss also prevents the exchange of gases. What structure found in modern plants was the solution to this problem?

+1 vote

 

  

encased spore

  

tracheid

  

cuticle

  

stoma

 

asked Dec 28, 2012 in Biology by anonymous
    

1 Answer

0 votes

 

stoma

 

answered Dec 28, 2012 by anonymous

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