8Animal Diversity An Overview d2l Flashcards
(15 cards)
What are the defining characteristics of animals?
Multicellular eukaryotes, heterotrophic, primarily sexual reproduction, diploid stage dominates life cycle, motile
All but one phylum has tissues, most phyla have organs.
What types of embryonic layers do most animal phyla possess?
Ectoderm, endoderm, and most have mesoderm
All but one phylum has a gastrula.
What is a body plan in animals?
A set of morphological and developmental traits
This includes body symmetry and gut structure.
What are the two types of gut structures in animals?
Complete gut and incomplete gut
This refers to the fate of the gastrula’s pore.
What is the significance of bilaterally symmetrical animals?
They may have a fluid or air-filled body cavity between the gut and the outer body wall.
What are choanoflagellates?
A group of protists that are closely related to animals
They are considered a sister group to Metazoa.
What does the term Metazoa refer to?
It is synonymous with Animalia.
What is Eumetazoa?
Animals with tissues.
What does Bilateria refer to?
Bilaterally symmetrical animals.
Fill in the blank: Animals are primarily _______.
sexual
True or False: All animal phyla have tissues.
False
All but one phylum has tissues.
Name an example of epithelial tissue.
Example of epithelial tissue
Specific examples not provided in the text.
Name an example of nervous tissue.
Example of nervous tissue
Specific examples not provided in the text.
Name an example of muscle tissue.
Example of muscle tissue
Specific examples not provided in the text.
Name an example of connective tissue.
Example of connective tissue
Specific examples not provided in the text.
