[Izzy Dunne]

plants have pores in their skin

Are you sure about that?

[yefragetuwrabrumuy]

http://en.wikipedia.org/wiki/Stoma

“In botany, a stoma (plural stomata) is a pore, found in the epidermis of leaves, stems and other organs that is used to control gas exchange. The pore is bordered by a pair of specialized parenchyma cells known as guard cells that are responsible for regulating the size of the opening.

“Air containing carbon dioxide and oxygen enters the plant through these openings and is used in photosynthesis in the mesophyll cells (parenchyma cells with chloroplasts) and respiration, respectively.

“Oxygen produced as a by-product of photosynthesis diffuses out to the atmosphere through these same openings. Also, water vapor is released into the atmosphere through these pores in a process called transpiration.”

[capt. norm]

Look up the word STOMA,

[Mycroft Holmes]

Epidermis seems to be used, could be skin:

Chow for paragraph eater.

[webheart]

Be careful what you ask for, because around here you can get a real education. I once said that elemental mercury accumulates in tissues with no way out, and I very quickly learned that it evaporates slowly through the skin. Felt pretty stupid, I did.

[Ozark Tom]

Stomata!