Which characteristic of a "water wise" plant refers to its leaves?

• A. Colorful and large
• B. Absorbent, Gray, Hairy, Hard, Leathery, Small, and Waxy
• C. Thick and fleshy
• D. Bright and glossy

Answer: (B)

The characteristic of a "water wise" plant that refers to its leaves is described accurately by the characteristics mentioned in the correct option. Water-wise plants have evolved adaptive features that help them conserve water in arid or semi-arid climates. Leaves that are absorbent, gray, hairy, hard, leathery, small, or waxy serve various purposes that enhance water retention and reduce water loss through transpiration.

For example, a waxy coating (cuticle) can limit water loss by creating a barrier against evaporation. Hairy leaves can provide shade, reducing leaf temperature and thus transpiration. Smaller leaf size decreases the surface area from which water can evaporate, and hard or leathery leaves are more resistant to drying out.

These adaptations are critical for survival in environments where water is scarce and underscore the importance of selecting such characteristics when considering drought-tolerant landscaping options. This trait is central to the concept of water-wise gardening, focusing on efficiency and sustainability in plant selection.