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Two features of conifer needles that reduce water loss in cold environments are which?
ASunken stomata and a smaller surface area
BRaised stomata and a smaller surface area
CSunken stomata and a broader surface area
DRaised stomata and a broader surface area
Answer & Solution
Correct answer: A. Sunken stomata and a smaller surface area
1. Spruce, fir and pine thrive in cold environments and carry leaves reduced in size and needle like in appearance.
2. Those needles have sunken stomata.
3. They also present a smaller surface area.
4. Both attributes aid in reducing water loss, so the pair must be sunken and smaller.
5. A broader surface would expose more tissue to the air and works against water conservation.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 30 "Plant Form and Physiology", section 30.4 Leaves_
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