What primary adaptation allows coniferous trees in the Swedish taiga to conserve water during cold Scandinavian winters?
Answer and explanation
Correct answer: B. Needle-shaped leaves with thick waxy cuticles and sunken stomata
- Step 1: During winter, soil water is frozen and biologically unavailable (physiological drought). Step 2. Needle-like leaves minimize surface area, while thick cuticles and sunken stomata drastically restrict water transpiration. Answer: Needle-shaped leaves with thick waxy cuticles and sunken stomata. Why not the others: Broad deciduous leaves lose excessive water; roots do not rely on geothermal heat.
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