The question describes an organism that can live both in terrestrial ("in air outside water") and aquatic ("in water") environments, which is characteristic of an amphibious lifestyle. Of the given options, 'Xerocole' refers to dry-adapted animals, 'Mesocole' to moderate-habitat animals, and 'Mesophyte' to moderate-moisture plants. None of these clearly describe an amphibious organism. While the term 'Secondary hydrocole' is not universally used to mean amphibious, in some specific ecological classifications, it might relate to organisms that have returned to aquatic life from terrestrial ancestors and retain some ability to function or spend time on land, or require both habitats for their life cycle (like amphibians). Given the other options are clearly incorrect, C is the intended answer despite potential ambiguity in terminology.
Which one of the following organisms can live both in air (outside water) and in water?
Asked in UPSC Geoscientist 2023 · Topic: Taxonomy (Taxonomic Characters and Evidence (Morphological, Anatomical, Cytological, Molecular))
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