Which of the following leaf modifications occur(s) in the desert areas to inhibit water loss?1.Hard and waxy leaves2.Tiny leaves3.Thorns instead of leavesSelect the correct answer using the code given below:

1. A

   2 and 3 only

   (a) 2 and 3 only. Tiny leaves and thorns do cut transpiration in deserts, but they are not the full set. Hard, waxy cuticles also inhibit water loss, so dropping statement 1 leaves the code incomplete and not the key.

2. B

   2 only

   (b) 2 only. Tiny leaves reduce surface area, yet xerophytes also use waxy surfaces and thorns. Isolating one adaptation understates desert morphology, so this letter is not the key.

3. C

   3 only

   (c) 3 only. Thorns replacing leaves (as in many cacti) are one xerophytic device, not the only one listed. Hard waxy leaves and reduced leaf size also inhibit water loss, so 3-only is not the key.

4. D

   1, 2 and 3

   (d) 1, 2 and 3. (d) Official key: Desert plants reduce transpiration with a thick waxy cuticle, tiny or rolled leaves, and thorns instead of leaves. All three modifications in the stem inhibit water loss, so the all-correct code is the stored key.

Summary. Official key is (d) 1, 2 and 3. Xerophytes limit evaporation with hard waxy leaves, reduced leaf area, and thorns in place of leaves. Each listed modification is a genuine desert adaptation. Codes that omit any one of them are incomplete. Honour the stored letter (d).