Which of the following animal groups is entirely aquatic echinodermata? A. mollusca B. crustacea C. nematoda D. platyhelminthes
Aquatic ecosystems are water based ecosystems. Animals that live in water are faced with the challenge of obtaining oxygen from their environment. Oxygen is important for them to get energy from food.
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fromChapter 16 / Lesson 13
Learn about the phylum Echinodermata. Discover the characteristics of Echinodermata, classes in the phylum Echinodermata, and examples of Echinodermata.