Explain the body organisation of Arthropoda.

(N/A) $\rightarrow$ They are bilaterally symmetrical,triploblastic,segmented,and coelomate animals.
$\rightarrow$ The body of arthropods is covered by a chitinous exoskeleton.
$\rightarrow$ The body consists of head,thorax,and abdomen.
$\rightarrow$ They have jointed appendages (arthros = joint,poda = appendages).
$\rightarrow$ Respiratory organs include gills,book gills,book lungs,or the tracheal system.
$\rightarrow$ The circulatory system is of the open type.
$\rightarrow$ Sensory organs like antennae,eyes (compound and simple),and statocysts or balance organs are present.