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Gaseous Exchange in Plants (1)
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Plant gases exchange during the day
Take in carbon dioxide and release oxygen
Plant gases exchange during the night
Take in oxygen and release carbon dioxide
Comparison between carbon dioxide in the plant cells compared to the air during the day
The concentration of carbon dioxide in plants is lower in plant cells than in the surrounding air during the day due to photosynthesis
Pore on the lower epidermis that allows gases to diffuse in and out of the leaf
Stoma
Name of the cell that controls the opening and closing of the stoma
Guard cells
Condition of the stoma during the day
Open
Condition of the stoma during the night
Close
Definition of osmosis
The process of movement of water from a region of high concentration of water molecules to a region of low concentration of water molecules through a semi-permeable membrane
Effect of osmosis on stoma during the day
Water diffuses into the guard cell and causes the cells to be turgid and curved, which leads to the opening of the stoma
Effect of osmosis on stoma during the night
Water diffuses out of the guard cells and causes the cells to be flaccid and straight, which leads to the closing of the stoma
The views expressed in the flashcard here are those of the contributor and don’t necessarily represent the views of pandai
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