To explain: The reason behind the evolutionary significance of segmentation in the animal body.
Concept introduction: Kingdom Animalia includes all animals. Animals are multicellular and heterotrophic organisms. They obtain nutrients by decomposing organic materials or by ingesting other organisms. All organisms are motile. Sexual reproduction takes in almost all animals.
To determine: The name of an animal that illustrates the adaptive value of segmentation.
Concept introduction: Kingdom Animalia includes all animals. Animals are multicellular and heterotrophic organisms. They obtain nutrients by decomposing organic materials or by ingesting other organisms. All organisms are motile. Sexual reproduction takes in almost all animals.
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