Themes and objectives

Дата канвертавання19.04.2016
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Chapter 23

Protostome Animals: Most Animals Form Mouth First


The following is a list of the main themes covered in this chapter and some study objectives. As you study, focus on these areas. Understand how the information you study fits into these themes

and how these themes relate to each other. Be sure you master each objective before moving on.

  1. All animals share certain common characteristics.

  • Review the common characteristics that unite all animals.

  1. All animals are classified into either Eumetazoa or Parazoa.

  • Differentiate between Eumetazoa and Parazoa.

  • Discuss the two types of symmetry seen in Eumetazoa.

  • Describe the embryological development typical of bilaterally symmetrical animals and

how it is used to further classify animals.

  1. Protostomes are animals in which the mouth forms first.

  • Explain the basic difference between protostomes and deuterostomes.

  • Differentiate between the two main groups of protostomes.

  • Review the different phyla of Lophotrochozoa and Ecdysozoa.

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