Compare and contrast between transportation in human ànd plants
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Mammals: Plants:
Specialised tubes - arteries, capillaries and veins. Specialised tubes - xylem vessels and tracheids and phloem sieve tubes.
All tubes are composed of living cells. Some tubes are composed of living cells, e.g. phloem. Others are composed of dead cells, e.g. xylem.
The concentration of substances transported is controlled (see homeostasis). The concentration of the substances being transported is not controlled.
The heart controls the circulatory system. The heart is controlled by the nervous system. There is no such control in plants.
The rate of flow is moderate and is regulated by vasoconstriction and vasodilation. The rate of flow in the xylem and phloem is quite slow. The rate of flow in the xylem is controlled by external factors via the stomata (e.g. temperature, wind, humidity).
Uses water as a medium in which to transport substances (it is a good solvent, it has a high specific heat capacity, has good surface tension but is not viscous, and is unreactive). Uses water as a medium in which to transport substances.
The substances being transported are: respiratory gases, glucose, amino acids, fatty acids, glycerol, vitamins, minerals, hormones. Substances being transported are: sucrose, amino acids, fatty acids, glycerol, vitamins, hormones (in the phloem) and minerals and water (in the xylem). Respiratory gases are not transported by this system but move via a series of inter-connecting air spaces.
Specialised tubes - arteries, capillaries and veins. Specialised tubes - xylem vessels and tracheids and phloem sieve tubes.
All tubes are composed of living cells. Some tubes are composed of living cells, e.g. phloem. Others are composed of dead cells, e.g. xylem.
The concentration of substances transported is controlled (see homeostasis). The concentration of the substances being transported is not controlled.
The heart controls the circulatory system. The heart is controlled by the nervous system. There is no such control in plants.
The rate of flow is moderate and is regulated by vasoconstriction and vasodilation. The rate of flow in the xylem and phloem is quite slow. The rate of flow in the xylem is controlled by external factors via the stomata (e.g. temperature, wind, humidity).
Uses water as a medium in which to transport substances (it is a good solvent, it has a high specific heat capacity, has good surface tension but is not viscous, and is unreactive). Uses water as a medium in which to transport substances.
The substances being transported are: respiratory gases, glucose, amino acids, fatty acids, glycerol, vitamins, minerals, hormones. Substances being transported are: sucrose, amino acids, fatty acids, glycerol, vitamins, hormones (in the phloem) and minerals and water (in the xylem). Respiratory gases are not transported by this system but move via a series of inter-connecting air spaces.
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HOMEWORK HELP > SCIENCE
What are the similarities and differences between the human circulatory system and the plant transport system?
What are the similarities and differences between the human circulatory system and the plant transport system?
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TROPHYHUNTER1 | CERTIFIED EDUCATOR
In plants, there is vascular tissue or conducting tissue located in its veins. Inside, there are xylem cells that conduct water and minerals upward from roots to leaves and phloem that conducts food from leaves downward to all parts of the plant. This resembles a circulatory system as it is a way for materials to travel throughout a plant. However, there is no heart or pump to assist circulation--water moves up a plant against gravity by capillary action. The human circulatory system has a pump called the heart, which has four chambers. The right side is responsible for pumping blood to the lungs to gain oxygen and release carbon dioxide. The left side is responsible for pumping oxygenated blood throughout the body. Arteries carry blood away from the heart and contain muscle that contracts as the heart beats. This pushes the blood along the circulatory pathway. Tiny capillaries allow the diffusion of materials between the bloodstream and cells and vica versa. Veins carry returning blood back to the heart again, and valves keep the blood flowing in the correct direction. Plants not only lack a heart to pump materials throughout its structure, they also lack muscle tissue. Their conducting tissue is like the pipes in a house or a drinking straw serving as a way to support and transport materials insde the plant.
HOMEWORK HELP > SCIENCE
What are the similarities and differences between the human circulatory system and the plant transport system?
What are the similarities and differences between the human circulatory system and the plant transport system?
print Print
document PDF
list Cite
Expert Answers
TROPHYHUNTER1 | CERTIFIED EDUCATOR
In plants, there is vascular tissue or conducting tissue located in its veins. Inside, there are xylem cells that conduct water and minerals upward from roots to leaves and phloem that conducts food from leaves downward to all parts of the plant. This resembles a circulatory system as it is a way for materials to travel throughout a plant. However, there is no heart or pump to assist circulation--water moves up a plant against gravity by capillary action. The human circulatory system has a pump called the heart, which has four chambers. The right side is responsible for pumping blood to the lungs to gain oxygen and release carbon dioxide. The left side is responsible for pumping oxygenated blood throughout the body. Arteries carry blood away from the heart and contain muscle that contracts as the heart beats. This pushes the blood along the circulatory pathway. Tiny capillaries allow the diffusion of materials between the bloodstream and cells and vica versa. Veins carry returning blood back to the heart again, and valves keep the blood flowing in the correct direction. Plants not only lack a heart to pump materials throughout its structure, they also lack muscle tissue. Their conducting tissue is like the pipes in a house or a drinking straw serving as a way to support and transport materials insde the plant.
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