- Respiration
- Digestion
- Detecting water movements and vibrations
- Reproduction
Category: DIVERSITY AMONG ANTMALS (THE KTNGDOM ANIMALIA)
- Metamorphosis
- Regeneration
- Molting (Ecdysis)
- Hibernation
- A complete digestive system
- Flame cells
- Cnidocytes
- A true coelom
- Cnidaria
- Platyhelminthes
- Porifera
- Nematoda
- Tissue level
- Organ level
- Cellular level
- Organ system level
- Earthworm
- Starfish
- Flatworm
- Roundworm
- Laying eggs
- Giving birth to underdeveloped young that complete development in a pouch
- Fully developed live birth
- Absence of mammary glands
- Laying eggs
- Giving birth to underdeveloped young in a pouch
- Presence of a placenta for fetal development
- External fertilization
- Lay eggs
- Give birth to live young
- Have pouches
- Are aquatic
- Reptilia
- Aves
- Mammalia
- Amphibia
- Heavy bones
- Absence of feathers
- Pneumatic bones and feathers
- Cold-bloodedness
- Reptilia
- Aves
- Mammalia
- Amphibia
- Gills only
- Lungs only
- Skin, lungs, and gills (in larvae)
- Trachea
- Amphibia
- Reptilia
- Aves
- Mammalia
- Osteichthyes
- Chondrichthyes
- Amphibia
- Reptilia
- Chondrichthyes
- Osteichthyes
- Amphibia
- Aves
- Chondrichthyes
- Osteichthyes
- Agnatha
- Amphibia
