A comparison of the systems of transport in mammals and flowering plants

in all living organisms need to distri furthere raw materials and do apart with waste. To do this they need a remove form. Transport inwardly small organisms can be adequately handled through processes much(prenominal) as diffusion, active bewitch, osmosis, endocytosis and exocytosis (Roberts, 1993). In large multi-cellular organisms, such as corrects and mammals, a expect governing body is required to move particles around. The transport dusts of both make ups and mammals consist of specialised tubes. In mammals these tubes atomic derive 18 called arteries, capillaries and veins. This serial publication of tubes is collectively known as a cardiovascular system. The cardiovascular system consists of a serial of vessels with a pump the center to move line of merchandise, the method of transport within this closed circulatory system (Fullick, 2000). The transport system within a skin rash localize also consists of a closed system of tubes but it is not a cir culatory system. Transport within a flowering plant takes place in xylem and phloem. In the mammalian cardiovascular system the heart pumps blood into a system of arteries (vessels that carry blood away from the heart) which in turn get-go into arterioles (smaller blood vessels which split up into capillaries).

The capillaries be tiny blood vessels within tissues where there is an interchange of materials between the blood and the cells. From the capillaries blood is carried screening towards the heart via a series of tiny venules which merge into larger vessels to form veins (Roberts, 1993). All mammalian tran sport system cells and tissues are living ! contradictory those in the flowering plant. Phloem tubes in the flowering plant are living but xylem are made up from dead, lignified cells. Xylem vessels are hollow tubes that transport urine and mineral ions and also provide structural support to the plant (Fullick, 2000). Phloem is a compound tissue which contains puree tubes on with companion cells. The sieve tubes are the site of transport for sucrose from the leaves to other part of...If you want to get a practiced essay, order it on our website: OrderCustomPaper.com

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