Prelims 2013 · Science and Technology · Question 44
Which of the following leaf modifications occurs/occur in desert areas to inhibit water loss?
- Hard and waxy leaves
- Tiny leaves or no leaves
- Thorns instead of leaves
Select the correct answer using the codes given below.
Answer
1, 2 and 3
1. Hard and waxy leaves — Correct. Xerophytes often have thick, leathery leaves with a waxy cuticle to reduce transpiration.
2. Tiny leaves or no leaves — Correct. Reduced leaf area, or complete absence of leaves, minimizes water loss in desert plants.
3. Thorns instead of leaves — Correct. In many desert plants, leaves are modified into spines/thorns, which greatly reduce transpiration.
Hence, all three are adaptations to inhibit water loss in desert areas.