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one of the building blocks of lipids (fats).
modified phloem parenchyma cells that help translocate food substances in the plant.
a leaf with certain areas that lack chlorophyll. The leaf therefore contains both green and non-...
the small amount of air that always remains in the lungs during breathing.
energy resources (coal, crude oil and natural gas) derived from the fossilised remains of plants...
broad group (taxon) in the biological classification system, which is then divided into kingdoms...