Arthropods are highly organized invertebrate animals. They have a bilaterally symmetrical body and possess jointed appendages in the form of legs, mouth parts, antennae, and wings. They are covered externally with a chitinous exoskeleton...
There are many examples of living organisms such as animals, plants & micro-organisms, Living organisms must be classified due to the enormous diversity in living organisms species, so they must be classified into groups...
Movement is a phenomenon that characterizes all living organisms and it arises by itself, as a result of the exposure of the living organism to a stimulus, therefore the living organism may respond positively...
