Which of the following is an abiotic factor in a desert ecosystem?

Step-by-step solution

1. Identify which option is a non‑living physical factor; abiotic factors include temperature, light, water, soil, etc.
2. Option (a) cactus is a plant (biotic).
3. Option (b) scorpion is an animal (biotic).
4. Option (c) sunlight is a source of radiation (abiotic).
5. Option (d) lizard is an animal (biotic).
6. Therefore the correct choice is (c) Sunlight.

Concept tested: abiotic vs biotic factors

Published 21 September 2026 · How this solution was prepared and checked