Which Biosphere Reserves of India term is correctly identified by “cyclones and salinity are major ecological pressures” and “a deltaic mangrove biosphere reserve in West Bengal”?

Correct Answer: Option D — Sundarban Biosphere Reserve. Sundarban Biosphere Reserve is correct because it is cyclones and salinity are major ecological pressures. Sundarban Biosphere Reserve is also specifically associated with a deltaic mangrove biosphere reserve in West Bengal. Two additional identifying facts are that Sundarban Biosphere Reserve is tidal creeks, mudflats and mangrove islands dominate the landscape and Sundarban Biosphere Reserve is associated with cyclones and salinity are major ecological pressures. Why the other options are incorrect: • Option A — Pachmarhi Biosphere Reserve: Pachmarhi Biosphere Reserve is forest and plateau habitats support central Indian biodiversity. It is incorrect here because its separate identifying association is a biosphere reserve in Madhya Pradesh. • Option B — Nilgiri Biosphere Reserve: Nilgiri Biosphere Reserve is it was India's first designated biosphere reserve. It is incorrect here because its separate identifying association is a biosphere reserve in the Western Ghats. • Option C — Nanda Devi Biosphere Reserve: Nanda Devi Biosphere Reserve is altitudinal zonation supports varied Himalayan biodiversity. It is incorrect here because its separate identifying association is a high-Himalayan biosphere reserve in Uttarakhand. Exam Takeaway: Connect Sundarban Biosphere Reserve with “cyclones and salinity are major ecological pressures” and “a deltaic mangrove biosphere reserve in West Bengal”.