An osmoregulatory adaptation in xerophytes is that their
Correct answer: A. Stomata are closed during daytime
- A. Stomata are closed during daytime
- B. Vascular tissues are well-developed
- C. Reproductive organs are multicellular
- D. Leaves have salt glands on the upper surface
Explanation
The correct answer is that xerophytes often close their stomata during the daytime to minimize water loss through transpiration, which is crucial for their survival in arid environments. This is a specific osmoregulatory adaptation. The other options are not directly related to osmoregulation in xerophytes: well-developed vascular tissues are structural adaptations for transport rather than water conservation, multicellular reproductive organs are a general plant feature, and salt glands are typical of halophytes, not xerophytes.
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About Plant Nutrition and Transport
Plants require macronutrients and micronutrients for growth, and mineral deficiencies produce recognizable symptoms. Transport involves water and minerals through xylem by transpiration pull, cohesion and adhesion, while phloem translocates sugars from sources to sinks. Root pressure and transpiration are distinct mechanisms.
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