AP BIOLOGY

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ANIMAL PHYSIOLOGY

OSMOREGULATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Some plants have special cells, called hinge cells, on one surface of their leaves that also has stomata. When hinge cells lose water, the leaf rolls up with the hinge cells on the inside of the rolled leaf. What is the advantage of this?
A
Decrease surface area exposed to sunlight and therefore reduces water loss
B
Allows for more sunlight to be exposed to the hinge cells
C
Allows stomata to open for gas exchange
D
Allows stomata to be protected from damage
Explanation: 

Detailed explanation-1: -Stomata are more numerous on the lower side of the leaf to prevent transpiration. Transpiration is the loss of water through stomata, so, more stomata are found on the lower surface to prevent excessive loss of water.

Detailed explanation-2: -Stomata are tiny openings or pores in plant tissue that allow for gas exchange. Stomata are typically found in plant leaves but can also be found in some stems. Specialized cells known as guard cells surround stomata and function to open and close stomatal pores.

Detailed explanation-3: -Stomata are responsible for allowing gas exchange between the inside of the leaf and the atmosphere. Stoma is the singular and stomata is the plural form.

Detailed explanation-4: -Stomata are found mainly on the lower surface of the leaf to reduce water loss by transpiration.

There is 1 question to complete.
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