Class Short Notes On Phylum Arthropoda( Jointed Legs
Phylum Arthropoda( Jointed Legs) –
- Largest phylum.
- Bilateral symmetry, Triploblastic, segmented coelomate.
- Body - Head, Thorax and Abdomen(three parts).
- Respiration by gills, book lungs and trachea.
- Blood without haemoglobin and circulatory system open.
- Excretion by malpighian tubules.
- Fertilisation internal – development direct or indirect
- eg. Cockroach, Apis, Anopheles etc.
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