Subject: Re: Guard Cells in Leaves

From: [email-masked] (Victor Engel)
Date: Mon, 25 Nov 1996 08:11:26 GMT

The scope of this question is too great for a simple Usenet post,
IMHO. Briefly, the function of guard cells is to open/close the
stomata. The stomata serve as the respiratory organs of plants,
transporting oxygen, CO2, and water. The factors dictating their use
depends upon the type of plant and recent environmental conditions.
For example, dessert plants typically open their stomata only at night
to prevent dehydration. However, since this limits photosynthesis
during the day, this technique is not typically used where water is
plentiful.

"Tammer Riad" <[email-masked]> wrote:

>Could someone please explain the function of guard cells in leaves, the
>factors that dictate when they open and close, and the theories surrounding
>them?
>
>Tammer Riad

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Victor Engel                                   Vector Angle
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http://the-light.com         http://www.onr.com/user/lights