Concept:Desert plants are classified by their ability to survive in very dry conditions.Explanation:Plants are grouped based on their water needs and habitat.Hydrophytes grow in water, while mesophytes grow in normal moisture conditions.Xerophytes are specially adapted to survive in deserts with little water.Sporophytes are a phase in plant reproduction, not an ecological group.Therefore, desert plants are correctly called xerophytes.Answer:C. xerophytes