- Insecta
- Crustacea
- Arachnida
- Myriapoda
Category: DIVERSITY AMONG ANTMALS (THE KTNGDOM ANIMALIA)
- Silica
- Calcium carbonate
- Chitin
- Cellulose
- Soft bodies
- Jointed appendages
- Radial symmetry
- Pseudocoelom
- Annelida
- Mollusca
- Arthropoda
- Chordata
- Gills
- Lungs
- Book lungs
- Moist skin
- Open
- Closed
- Absent
- Both open and closed
- Parapodia
- Setae
- Pseudopods
- Flagella
- Absence of coelom
- Jointed appendages
- Metameric segmentation
- Radial symmetry
- Arthropoda
- Mollusca
- Annelida
- Nematoda
- Liver fluke
- Hookworm
- Tapeworm
- Planaria
- Acoelomates
- Coelomates
- Pseudocoelomates
- Eucoelomates
- Incomplete (one opening)
- Complete (two openings)
- Absent
- Sac-like
- Platyhelminthes
- Annelida
- Nematoda
- Arthropoda
- Nephridia
- Malpighian tubules
- Flame cells
- Kidneys
- Planaria
- Earthworm
- Tapeworm
- Leech
- Cellular
- Tissue
- Organ
- Organ system
- Radial
- Asymmetry
- Bilateral
- Spherical
- Nematoda
- Annelida
- Platyhelminthes
- Mollusca
- Cnidocytes
- Choanocytes
- Colloblasts
- Nematocysts
