Mollusca exhibit various modes of respiration depending on their habitat - aquatic, terrestrial, or amphibious. Different respiratory organs are modified accordingly, such as ctenidia or gills for aquatic species, pulmonary sac for aerial species, and mantle or integument for those lacking specific

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Molluscs are diverse animals found in both terrestrial and aquatic habitats. They belong to Phylum Mollusca and exhibit characteristics such as a calciferous shell, bilateral symmetry, and a well-developed body system. The study of Molluscs is called Malacology, while the study of Molluscan Shells i

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