- Locomotion
- Feeding and respiration
- Defense
- Shell secretion
No category found.
- Soft body
- Exoskeleton
- Internal skeleton
- Radial symmetry
- Only one host
- Multiple hosts
- Direct development
- Asexual reproduction only
- Scyphozoa
- Hydrozoa
- Anthozoa
- Cubozoa
- Simple organization
- High degree of specialization
- Totipotency of cells
- Parasitic nature
- Flatworm
- Roundworm
- Earthworm
- Sponge
- Live birth
- Laying leathery eggs
- Development in a pouch
- Internal fertilization only
- Mammary glands
- Feathers
- Four-chambered heart
- Laying eggs
- Cartilaginous fish
- Bony fish
- Jawless fish
- Lobe-finned fish
- Tick
- Mosquito
- Liver fluke
- Leech
- Gastropoda
- Bivalvia
- Cephalopoda
- Polyplacophora
- Two-chambered
- Three-chambered
- Four-chambered
- No heart
- Fish
- Worms
- Tadpoles in larval stage
- Birds
- Bilateral symmetry
- Post-anal tail
- Pharyngeal gill slits
- All of the above
- Molluscs
- Arthropods
- Echinoderms
- Cnidarians
- A nerve net
- A dorsal hollow nerve cord
- A ventral nerve cord
- A brain only
- Flame cells
- Malpighian tubules
- Nephridia
- Kidneys
- Blood
- Hemolymph
- Lymph
- Plasma
- Fusion of segments into functional units
- Absence of a coelom
- Development of a complete digestive system
- Presence of jointed legs
