Podcast
Questions and Answers
What is a defining characteristic of Phylum Echinodermata?
What is a defining characteristic of Phylum Echinodermata?
- Bilateral symmetry
- Radial symmetry
- Pentaradial symmetry (correct)
- Asymmetry
Which phylum has a crown of ciliated tentacles around the mouth used for feeding?
Which phylum has a crown of ciliated tentacles around the mouth used for feeding?
- Phylum Mollusca
- Phylum Platyhelminthes
- Phylum Ectoprocts and Brachiopods (correct)
- Phylum Cnidaria
What is the difference between Cephalochordata and Urochordata?
What is the difference between Cephalochordata and Urochordata?
- Cephalochordata has swimming larvae while Urochordata doesn't
- Cephalochordata has all key chordate features in adults while Urochordata doesn't (correct)
- Urochordata has a centralized nervous system while Cephalochordata doesn't
- Cephalochordata burrows tail-in and filter-feeds while Urochordata doesn't
What is a defining characteristic of Jawless Vertebrates?
What is a defining characteristic of Jawless Vertebrates?
What is a characteristic of Chondrichthyes?
What is a characteristic of Chondrichthyes?
What is a general characteristic of Gnathostomes?
What is a general characteristic of Gnathostomes?
What are the advantages of the amniotic egg in reproductive adaptations of vertebrates?
What are the advantages of the amniotic egg in reproductive adaptations of vertebrates?
Flashcards
Phylum Echinodermata defining characteristic?
Phylum Echinodermata defining characteristic?
Adults exhibit pentaradial symmetry (five-fold radial symmetry).
Phylum with ciliated tentacles?
Phylum with ciliated tentacles?
These phyla possess a lophophore, a crown of ciliated tentacles around the mouth used for suspension feeding.
Cephalochordata vs. Urochordata?
Cephalochordata vs. Urochordata?
Cephalochordata retain all key chordate features as adults, while Urochordata lose some in adulthood.
Defining trait of Jawless Vertebrates?
Defining trait of Jawless Vertebrates?
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Characteristic of Chondrichthyes?
Characteristic of Chondrichthyes?
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General trait of Gnathostomes?
General trait of Gnathostomes?
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Advantage of the amniotic egg?
Advantage of the amniotic egg?
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Study Notes
Overview of Animal Diversity and Evolution
- Phylum Cnidaria: Acoelomate with radial symmetry, two aquatic body forms - sessile polyp and drifting medusa, catch prey with cnidocytes/nematocyst.
- Phylum Platyhelminthes: Acoelomate with one opening gastrovascular cavity, centralized nervous system, and tapeworms and flukes as parasites.
- Phylum Syndermata: Aquatic, microscopic, pseudocoelom with parthenogenesis.
- Phylum Ectoprocts and Brachiopods: Crown of ciliated tentacles (lophophore) around the mouth used for feeding.
- Phylum Mollusca: Calcium carbonate shell, most are marine, complete digestive system, and specialized gas exchange surface.
- Phylum Echinodermata: Pentaradial symmetry, unique water vascular system with tube feet, and chordate characteristics present in at least the embryo.
- Characteristics of Cephalochordata and Urochordata: Cephalochordata has all key chordate features in adults and burrows tail-in & filter-feeds, while Urochordata has swimming larva with all key features.
- Detailed Chordate Phylogeny: Includes two or more sets of hox genes, endoskeleton, and complex nerve system.
- Characteristics of Jawless Vertebrates: Hagfishes and lampreys are cyclostomes, with no jaws and reduced vertebrae.
- General Characteristics of Gnathostomes: Vertebrates with hinged jaws, lateral line system, and genome duplication.
- Characteristics and Examples of Chondrichthyes: Have a skeleton of cartilage, internal fertilization, and can be oviparous, viviparous, or ovoviviparous.
- Reproductive Adaptations of Vertebrates: Oviparous, viviparous, and ovoviviparous with advantages of the amniotic egg, which frees reproduction from water and protects the embryo with a watery amniotic sac.
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