EVERYDAY SCIENCE

SCIENCE

BOTANY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What cells allow the stomata to open and close
A
Body Cells
B
Pressure Cells
C
Guard Cells
D
Rhizoids
Explanation: 

Detailed explanation-1: -Closing and opening of stomata is controlled by guard cells. If guard cells are turgid [swollen due to water entry] they open the stomata. When they lose water [plasmolysis ], and subsequently become less turgid, they close stomata. Closing of stoma inhibits gaseous exchange and transpiration in plants.

Detailed explanation-2: -Guard cells use osmotic pressure to open and close stomata, allowing plants to regulate the amount of water and solutes within them. In order for plants to produce energy and maintain cellular function, their cells undergo the highly intricate process of photosynthesis .

Detailed explanation-3: -Guard cells are cells surrounding each stoma. They help to regulate the rate of transpiration by opening and closing the stomata.

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