Plant cell the major classes of cells and tissues of roots, stems, leaves, flowers, and reproductive structures, each of which may be composed of several cell types. Parenchyma cells are living cells that have functions ranging from storage and support to photosynthesis (mesophyll cells) and phloem loading (transfer cells). Apart from the xylem and phloem in their vascular bundles, leaves are composed mainly of parenchyma cells. Some parenchyma cells, as in the epidermis, are specialized for light penetration and focusing or regulation of gas exchange, but others are among the least specialized cells in plant tissue, and may remain totipotent, capable of
Remote sensing atmospheric boundary layer cells contain cloud filled regions in the center of the hexagon formation with cloud free regions on the edge of the hexagon. The closed cell has slow rising motion in the middle and faster descending motion at the edges. Closed cells tend to occur over warmer waters such as those associated with the Kuroshio Current and the Gulf Stream. Closed cellular patterns are generally formed under weak convective mixing in the lower levels with an inversion layer cap. They commonly occur in the eastern sections of subtropical high pressure regions or in the southeastern quadrant of polar highs. The CALIOP