The word you are looking for is nematocyst.
The highly specialized fluid portion of the cell is the plasma.
unique and highly specialized
Its product was unique and highly specialized.
heart
Its product was unique and highly specialized.
highly specialized economy will cause downfall more and less. more rights being opposed and less food for the population
yes
A Portuguese Man'o War, Physalia physalis, is the best known siphonophore hydrozoan cnidarian. It is a colonial cnidarian that floats at the surface of tropical and subtropical oceans by means of a highly modified, gas-filled polyp. It is also infamous for its powerful venomous sting.
Glands
Highly sophisticated space crafts and specialized suits.
neuron
jointed appendages.