Which one among the following biogeographic zones of India covers the

Which one among the following biogeographic zones of India covers the largest area ?

Trans-Himalayas
Desert
Semi-arid region
Himalayan region
This question was previously asked in
UPSC Geoscientist – 2024
India is divided into 10 major biogeographic zones. Among the options provided, the Semi-arid region covers the largest area in India. Based on commonly cited area percentages for these zones, the Semi-arid region constitutes approximately 15.6% of India’s landmass, compared to the Trans-Himalayas (around 5.7%), Desert (around 6.6%), and Himalayan region (around 6.4%). While the Deccan Peninsula is the largest overall zone, it is not listed as an option.
Among the given options, the Semi-arid region is the largest biogeographic zone in India by area.
India’s 10 biogeographic zones are Trans-Himalayan, Himalayan, Desert, Semi-arid, Western Ghats, Deccan Peninsula, Gangetic Plain, Coasts, North-East, and Islands. The Semi-Arid zone lies adjacent to the Desert and Deccan Peninsula zones and covers parts of Rajasthan, Gujarat, Maharashtra, Karnataka, Andhra Pradesh, and Tamil Nadu.