|Class 9 Biology Diversity In Living Organisms||Arthropoda|
This is the largest group of animals
The bodies of the organisms belonging to this group are bilaterally symmetrical and segmented.
These organisms have an open circulatory system. Therefore the blood does not flow in a well-defined blood vessel.
The coelomic cavity of these organisms is blood-filled.
These organisms have jointed legs.
Examples of organisms belonging to this group are prawns, butterflies,
houseflies, spiders, scorpions and crabs.