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small, non-pigmented plastids that occur in roots and non-photosynthetic tissues of plants. They often occur in cells that store food.
the outermost nucleated cytoplasmic layer of the Schwann cells that surrounds the axon of a...
refers to any variation in the nucleotides, genes, chromosomes, or whole genomes of organisms....
the transfer of pollen from the anther to the stigma of the same plant (self-pollination) or of...
the windpipe or tube that carries air. It is kept open by C-shaped rings of cartilage.