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(also called the pith) the central part of the stem that consists of large, thin-walled parenchyma cells with intercellular airspaces
microscopes that do not rely on light to produce images. They are used to study the internal...
microscopic canals running longitudinally through compact bone tissue that contain blood vessels...
small units of DNA that contain hereditary information that is passed from one generation to the...
a small, corky pore or narrow line on the surface of the stem of a woody plant that allows the...