Term
Phylum Chordata
Tissue Layers?
Symmetry?
Development?
Skeleton?
Circulatory System? |
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Definition
Triploblastic
Bilateral
Deuterostomes
Endoskeleton
Closed |
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Term
| 5 Chordata Characteristics |
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Definition
Notochord
Dorsal, hollow nerve cord
Pharyngeal gill slits
Postanal tail
Endostyle (thyroid gland) |
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Term
|
Definition
| All descendants sharing a common evolutionary ancestor |
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Term
|
Definition
| Inherited structures in different species that are similar because of their common ancestry |
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Term
Phylum Chordata
Subphylums
Classes |
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Definition
Subphylum Urochordata
Class Ascidiacea
Subphylum & Class Cephalochordata |
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Term
Subphylum Urochordata Characteristics
(5) |
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Definition
Notochord and nerve cord present only in larvae
Adults are sessile
Segmentation absent
Body enclosed in tunic
Entirely marine |
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Term
Subphylum Cephalochordata Characteristics
(4) |
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Definition
Notochord and nerve cord present throughout life
Segmentation present
Lance-shaped and w/o head
Entirely marine |
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