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Essay Explain Why Transport Systems Are Important In The Body

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Task 2

Explain why transport systems are important in the body?
The single-celled organisms that are small have a larger surface area to volume ratio, therefore they can receive substances by diffusion from the large plasma membrane which they have. The substances can diffuse at only short range distance in order for it to diffuse at a faster rate to meet the organism’s needs.
On the other hand multi-cellular organisms have a much smaller surface area to volume ratio and many of their cells are contact-less with their surroundings, so they cannot entirely rely on diffusion in order to supply their organs with nutrients and oxygen because the distance between the cells and their surface is far and they cannot reach it. Humans are multi-cellular and we have special surfaces for gaseous exchange and also for receiving nutrients. The blood is also a special …show more content…

Plants have two transport systems for transporting substances- Xylem transports the water and solutes from the roots to the leaves while phloem transports food from the leaves into the rest of the plant. The process of which the water evaporates from the leaves is called transpiration, which then results in more water being drawn up from the roots.
Plants have two transport systems to move food, minerals and water through their roots, leaves and stems. They use continuous tubes in the systems and are called Phloem and Xylem, also known as vascular bundles.
The xylem tubes are composed of dead xylem cells that have the cell walls removed at the end of the cells and making tubes for the water and the dissolved mineral ions can flow. The rest of the xylem cell has a thick and reinforced cell wall that provides strength.
The phloem vessels are used in translocation, the dissolved sugars which were produced through photosynthesis and other dissolvable food molecules are moved from the leaves to the growing tissues and the storage

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