| http://www.w3.org/ns/prov#value | - ; found in bacteria ??? ??? ??? chemotropism the orientation of cells or organisms in relation to chemical stimuli; the growth or movement response of organisms to chemical stimuli ??? ??? ??? chitin a white or colorless, amorphous, horny substance that forms part of the outer integument of insects, crustaceans and some other invertebrates; it also occurs in certain fungi ??? ??? ??? chlorophyll a
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