animal kingdom arthopoda

arthropoda

the body is covered by

chitinous exoskelton

the body consisits of

head , thorax , abdomen

respiratory organs

gills,book gills,book lungs or tracheal system

sensory organs

anntennae ,eyes(simple and compound),statocysts or balancing organs

excretion takes place through

malpighian tube

eg for economically important arthropods

apis(honeybee),bombyx(silkworm),laccifer(lac insect)

vectors eg

anopheles,aedes,culex

gregarious pest eg

locusta

living fossil eg

limulus(king crab)

circulatory system

open type

fertilization

internal

development

direct or indirect

sexes are seperate or not