The greatest biodiversity of living species on Earth is represented by___________?
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Answer: C. Insects
Explanation
Insects represent the most diverse and species-rich group of living animals on Earth. Estimates suggest millions of distinct insect species inhabit nearly every terrestrial ecosystem. Their immense evolutionary success is driven by rapid reproduction and adaptive anatomical designs. Insects belong to the arthropod phylum, characterized by segmented bodies and exoskeletons. Evolutionary radiation over hundreds of millions of years has produced incredible ecological specialization. Entomology is the scientific study dedicated to exploring this vast biological diversity.
Insects play critical roles in pollination, decomposition, and serving as food web foundations. Agricultural productivity heavily depends on insect pollinators like bees and various butterflies. Some insect species act as vectors for serious human diseases, making pest management vital. Algae are photosynthetic organisms distributed across aquatic habitats but possess lower species diversity. Fungi represent a massive kingdom of organisms but contain fewer described species than insects. Protozoa are single-celled eukaryotic microorganisms with high abundance but lower overall species counts.
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