Practice question

Arid Indian Desert zone experiences scanty erratic rainfall regime classified as arid with annual precipitation generally ranging 100 to 400 mm, concentrated in short monsoon burst July-September, high coefficient variability exceeding 60%. Mean annual temperature high, potential evapotranspiration greatly exceeds precipitation, resulting in water deficit most months. Vegetation sparse, productivity low. Rainfall gradient crucial: below 100 mm hyper-arid, 100-400 arid desert, 400-750 semi-arid, influencing crop choice, livestock density, and species composition like Great Indian Bustard inhabiting low rainfall grasslands. This pattern is frequently tested in NCERT-based competitive examinations requiring precise recall of taxonomic hierarchy principles.