True
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True. The majority of radially symmetric animals, such as jellyfish and sea anemones, are aquatic, as their body design is well-suited for movement and feeding in water environments.
No, terrestrial animals do not respire with gills. Gills are respiratory organs found in aquatic animals that extract oxygen from water. Terrestrial animals typically respire using lungs or tracheal systems to extract oxygen from the air.
False. The largest phylum of animals is Arthropoda, which includes insects, spiders, and crustaceans. Mollusks belong to the second largest phylum, Mollusca.
True. The depth of the water in an aquatic ecosystem affects the amount of sunlight that can penetrate the water. This influences photosynthesis and the distribution of plants and animals in the ecosystem.
false
False. All animals, regardless of their primary diet, are able to use carbohydrates as a source of energy to fuel their life processes. Carbohydrates are broken down into glucose, which is a universal source of energy for all living organisms.