20 Figure 11. A mobile antenna horizontal-plane pattern [13]Figure 12. Corner-reflector antennas light bar mounted on the roof ahead of theantenna. 5.3 Corner Reflector An antenna comprised of one or more dipoleelements in front of a corner reflector, calledthe corner-reflector antenna, is illustrated infigure 12.
Cheek cells, being animal cells, do not contain a cell wall as onion â¦ cells do becasue cell walls are found only in plant cells for structure and rigidness. Onion cells, unlike most plant cells, do not have chlorplasts becasue it does not need sunlight for photosynthesis as other plants do.
Plant cells and animal cells have some things in common and some differences. Differences: Plant cells have centrioles or intermediate filaments. They also have a more square shape and contain chloroplasts. Plants have a cell wall that is made up of fibrils of cellulose. Plants and animal cells divide to form new cells. Plant cells produce their own food or energy. Animal cells must obtain food from a source outside of the body.