Why might a Sunflower wilt visibly faster than small blooms like Baby's Breath when deprived of water?

Answer

The overall leaf surface area increases the evaporative demand

Flowers with single, large stems and greater leaf surface area, like sunflowers, face a higher evaporative demand compared to clusters of smaller blooms when deprived of water.

Why might a Sunflower wilt visibly faster than small blooms like Baby's Breath when deprived of water?
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