Question

during transpiration the leaves lose more water from their upper surface true or false

Answer 1

True

------------------------------------------------------------------------------------------------------because leaves have stomata which helps in transpiration and creating transpiration pull.

# Hope it helps.

Answer 2

True 
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<> During transpiration the leaves lose more water from their upper surface.

<> Stomata are the pores on the leaves 

<> When stomata  are open , transpiration rates increase
 
<> But .  when they are closed, transpiration rates decrease.