The word Arthropoda means animals with jointed legs. It is the largest phylum of the animal kingdom.
General features are-
- It has a segmented body like that of an annelid.
- Body divided into head, thorax and abdomen.
- Body covered by exoskeleton made of chitin.
- Have organ system level of organisation.
- Open circulatory system is present. Show Bilateral symmetry.
Example- Palaemon (prawn), Spiders, Insects, mosquito and cockroach.