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Sagot :
Answer:
a when the guard cells are full of water a pex
Explanation:
A. When the guard cells are full of water, they become stiff and hold
the pore open.
- Two guard cells make up the stomata. The walls of these cells are thicker on the inside than they are on the outside.
- Stomata open when they take in water and close when they lose water due to the unequal thickness of the paired guard cells.
- When stomata open, they release water vapor and other gases into the atmosphere, including oxygen.
- A. When the guard cells are full of water, stoma become stiff and hold the pore open
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https://brainly.com/question/13654140?referrer=searchResults
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