BIO 1202 Chapter 32

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Department
Biological Sciences
Course
BIOL 1201
Professor
All Professors
Semester
Spring

Description
1Bio 1202CHAPTER 32An Overview of Animal DiversityThe main distinguishing features of the Kingdom Animalia areEukaryoticMulticellularHeterotrophicIngestive method of digestionSexual reproductionNo cell wallRapid response to stimulinerves and musclesIn addition to these characteristics as animals evolved from the animallike protists they developed more complex and organized bodiesThe closest relative to the animals are protists in the clade known as opisthokonts see fig 323Cellular specialization or partnership between specialized cells may have been what ultimately lead to the animal kingdomCellular specialization leads to the development of tissues which then can lead to the combination of tissues into an organOrgans may then become arranged into organ sys
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