Monitoring of bioaerosols i.e., pollen grains and fungal spores, was undertaken for two consecutive years in a city Thar Desert- Bikaner, using Gravity Slide Method. A total 32 different taxa were identified with Annual Pollen Integral (API) 890 per sq. cm the first year 906 second year. The count non-arboreal plants much more than that arboreal plants. most prominent annual average percentage ...