- Life Sciences
the cylinder of parenchyma found from the centre of the stem to the inside of the vascular bundles.
the dramatic increase in the human population growth rate over the past two centuries.
(also called the pith) the central part of the stem that consists of large, thin-walled...
a pore in nuclear membrane that enables macromolecules to enter and leave the nucleus.
the broad band of tissue in plant organs under the epidermis, including the parenchyma cells and...