In the context of UPSC Prelims GS Paper I, understanding tree classifications is crucial for environmental studies and biodiversity conservation. Among the given trees, Mahua (Madhuca indica) and Teak (Tectona grandis) are deciduous, shedding their leaves seasonally to conserve water during dry periods. In contrast, Jackfruit (Artocarpus heterophyllus) is an evergreen species, retaining its foliage throughout the year, thereby highlighting the diversity in tree adaptation strategies to different climatic zones.