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organelles that only occur in the green parts of plants. They contain the green pigment chlorophyll.
the outermost layer of the stele or vascular cylinder in a dicotyledonous plant root. Lateral...
(also called physical digestion) the breaking down of food into smaller pieces using mechanical...
simple chemical substances needed by the body in relatively small amounts for normal growth and...
the internal supporting framework made of cartilage and/or bone. This type of skeleton occurs in...