The early evolution of animals
The early evolution of animals
The early evolution of animals
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Animal body plans<br />
• Despite a seemingly high<br />
diversity <strong>of</strong> form, there are<br />
only a few basic types <strong>of</strong><br />
animal body plans<br />
• Defined by:<br />
– number and types <strong>of</strong> enveloping<br />
tissue<br />
– Presence or absence <strong>of</strong> a<br />
celom<br />
• Evolved from a flagellated<br />
eukaryote, similar to the<br />
choan<strong>of</strong>lagellates
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