This is a draft cheat sheet. It is a work in progress and is not finished yet.
Animal Phylogeny - ChordatesAre bilaterians monophyletic?
- Yes. Monophyletic Group | Are pseudocoelomates monophyletic?
- No. Evolved seperately many times | Phylum Chordata
humans | All chordates have all of these characteristics | 1. Dorsal Neural Tube
- spinal cord in humans. Main nervous tissue | 2. Notochord
- may be replaced by vertebral column
- Cartalage that provides support and becomes spinal column in humans from posterior to anterior | 3. Pharyngeal Slits (become gills in fish)
- pharyngeal pouches present in all vertebrate embryos | 4. Post-anal tail
- humans have this during embryo |
| | GatorWhat makes a gator a vertebrate? | Head
- Distinct and well-differentiated possessing sensory organs.
- The brain is enclosed in a protective box | Vertebral Column
- Enclosed and protects the dorsal nerve cord | Vertebrates also have
- Internal Organs: liver, kidneys, endocrine glands, heart and closed circulatory system
- Endoskeleton: made of cartilage or bone
Makes possible great size and extraordinary movement | How is a gator a chordate? | - Dorsal Neural Tube | - Notochord | - Pharyngeal Slits (during development) | - Post-anal tails |
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