- Eukaryotic cells
- Multicellularity
- Heterotrophic nutrition
- Presence of chitin
No category found.
- Primates
- Carnivora
- Chiroptera
- Rodentia
- Respiration
- Flight
- Digestion
- Reproduction
- Molting
- Hibernation
- Estivation
- Ecdysis
- Skin only
- Lungs only
- Gills only
- Skin, lungs, and gills
- Sarcopterygii
- Actinopterygii
- Chondrichthyes
- Agnatha
- Vertebrae
- Fins
- Scales
- Paired appendages
- Notochord
- Dorsal hollow nerve cord
- Ventral solid nerve cord
- Pharyngeal slits
- Asteroidea
- Ophiuroidea
- Echinoidea
- Holothuroidea
- Closed
- Open
- Absent
- Double
- Liver fluke
- Tapeworm
- Planaria
- Blood fluke
- Jellyfish
- Sponge
- Flatworm
- Earthworm
- Homodont
- Heterodont
- Monophyodont
- Polyphyodont
- Poikilothermic
- Ectothermic
- Endothermic
- Heterothermic
- Mammals
- Birds and reptiles
- Fish
- All vertebrates
- Chondrichthyes
- Osteichthyes
- Agnatha
- Myxini
