Phylum Arthropoda is the most numerous phylum of all living organisms. One estimate is that there are well over one million species of insects alone. There are more species of insects than all other plants and animals together.An arthropod has a segmented body covered by an exoskeleton. This exoskeleton serves as protection and provides places for muscle attachment. Arthropods must molt because their exoskeletons don’t grow with them. Arthropods have jointed appendages, which include antennae and mouthparts as well as walking legs.
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- Phylum Porifera
- Phylum Cnidaria
- Phylum Platyhelminthes
- Phylum Nematoda
- Phylum Annelida
- Phylum Mollusca
- Phylum Arthropoda
- Class Diplopoda
- Class Insecta
- Phylum Crustacea
- Phylum Chordata
- Class Aves
- Class Mammalia
- Phylum Arachnida
- Class Merostomada
- Class Chilopoda
- Phylum Echinodermata
- Class Crinoidea
- Class Asteriodea
- Class Ophiuroidea
- Class Echinoidea
- Class Holothuroidea
- Home
- Contact
- Phylum Porifera
- Phylum Cnidaria
- Phylum Platyhelminthes
- Phylum Nematoda
- Phylum Annelida
- Phylum Mollusca
- Phylum Arthropoda
- Class Diplopoda
- Class Insecta
- Phylum Crustacea
- Phylum Chordata
- Class Aves
- Class Mammalia
- Phylum Arachnida
- Class Merostomada
- Class Chilopoda
- Phylum Echinodermata
- Class Crinoidea
- Class Asteriodea
- Class Ophiuroidea
- Class Echinoidea
- Class Holothuroidea