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Anni [7]
3 years ago
10

True or False. Animals vary tremendously in structure. Nevertheless, they can be categorized into a few basic body plans based o

n body symmetry, number of embryonic germ layers, type (or absence) of body cavity, and characteristics of embryonic development.
Biology
1 answer:
NNADVOKAT [17]3 years ago
5 0

Answer:

True

Explanation:

Animals can be categorized into 3 based on body symmetry

  • <em>Those without any body symmetry (asymmetrical)</em>
  • <em>Those with bilateral body symmetry (bilateria)</em>
  • <em>Those with radial body symmetry (Radiata)</em>

Animals can be categorized into 2 based on number of embryonic germ layer;

  • <em>Those with two layers - endoderm and ectoderm (diplobastic)</em>
  • <em>Those with three layers - mesoderm in addition to ectoderm and endoderm (triploblastic)</em>

Animals can be categorized based on presence/absence of body cavity or coelom;

  • <em>No body cavity - acoelomates</em>
  • <em>False body cavity - pseudocoelomates</em>
  • <em>True body cavity - coelomates</em>

Animals can be categorized into 2 based on characteristics of embryonic development;

  • <em>Deuterostomes</em>
  • <em>Protosomes</em>
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