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organisms whose cells have a true nucleus and true organelles. These structures are not surrounded by a membrane.
kingdom of multicellular eukaryotic organisms that do not have cell walls, feed...
all the different ecosystems with their numerous and varied organisms.
(also called the stele) the region that includes the pericycle and the vascular tissues in a...
(also called elimination or defecation) the process whereby undigested food remains are expelled...
the second biological classification group (taxon) that is divided into phyla (for animals) or...