Circulatory system of plants?
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Do plants have a circulatory system? or one that is like our own circulatory system... --please give sources...... thanks...
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Answer:
Plants do have a circulatory system but not one like animals with a pump such as a heart. Think of higher plant circulatory systems as ones to move fluid UP from the roots to the leaves, phloem; and one to move fluids DOWN from leaves to the roots, xylem. These fluid transport systems are not open tubes like blood vessels. They are a system of specialized cells, connected to one another. Essential fluids move through cell to cell to get where the fluid is utilized. There are theories about how this happens such as osmotic transfer, root pumping, differential atmospheric pressure, capillary action and combinations of those phenomenon. Good diagrams and explanations can be found by using Google Web Search with the key words, xylem and phloem.
darkael0... at Yahoo! Answers Visit the source
Other answers
nope...plants have a conductive tissue(xylem n phloem)
aki_leo24
YES ...FLOM and XYLEM www.fs.fed.us/pnw/pubs/journals/pnw_20…
Robert P
of course yes,through xylem and phloem but different from our system a simple explanation you can get from 12th text
mahy
The conductive system of plants just like the circulatory system of human beings Here the xylem and phloem act as heart and water and mineral ions act as blood.
shovan
Plants do not have a "circulatory system." This is a term applied to many animals (and solely animals). Many plants do contain a comparable "Vascular system." Within Plantae, algae and bryophytes (liverworts, mosses, etc) contain no such system. It is found within the higher plants only: vascular cryptograms, gymnosperms, and angiosperms. Nonvascular plants tend to be low-growing and immersed in their damp environments- each cell of plant acquiring its nutrients directly from the environment. Vascular plants can grow much larger, but heights are limited by molecular forces within the vascular system (physics of water). Depending on how evolved the plant is, its vascular system may be composed of a variety of cells. Cells actively being used for transport are generally dead- cytoplasm gone and hollow for material transport. Some of these cells have plates at each end (sieve cells in gymnosperms) or they may be open-ended. Xylem cells transport water and raw nutrients from the lower portions of the plant toward the leaves, which use photon energy to produce carbohydrates (sugars, food) that are then stuffed into the Phloem cells for distribution and storage to the rest of the plant. Water and nutrient movement between vascular system and living cells are facilitated by a complex system of solute potentials. Movement within the system itself is linked to this and a source-sink flow. Essentially, plants with a vascular system can be comparable to animals with a circulatory system, but they are entirely different organisms. Plants do not have a circulatory system.
BotanyDave
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