Animals called ______ have radial symmetry, a gastrovascular cavity, and a body composed of a layer of ectoderm and a layer of endoderm.
Question
Animals called ______ have radial symmetry, a gastrovascular cavity, and a body composed of a layer of ectoderm and a layer of endoderm.
Solution
Animals called cnidarians have radial symmetry, a gastrovascular cavity, and a body composed of a layer of ectoderm and a layer of endoderm. Cnidarians include organisms such as jellyfish, corals, and sea anemones. They are characterized by their unique stinging cells called cnidocytes, which contain nematocysts used for capturing prey. The structure of cnidarians allows them to interact with their environment in a way that is distinct from bilateral animals, as their radial symmetry enables them to respond to stimuli from all directions evenly. This anatomical arrangement is essential for their survival in aquatic habitats.
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