Movement is a phenomenon which characterizes all the 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...
Class : Agnatha Endoskeleton is cartilaginous , The body is thin , long and eel-like , with no paired fins , The mouth is circular , funnel-shaped contains a rough tongue that provided with...
Phylum : Arthropoda The body is bilaterally symmetrical , It is divided into a number of segments carry many pairs of appendages that are divided into several jointed pieces , It is divided into...
Kingdom Animalia All of kingdom Animalia are multicellular , The nucleus is eukaryotic , They have the ability of moving from a place to another , They have the ability to respond rapidly to...
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