Why do plants need water?
Plants need water in order to carry out many of their essential life functions such as photosynthesis, where water and carbon dioxide are converted unto glucose and oxygen using energy from the sunlight. They also need water in order for their cells to stay turgid as plants do not have skeletons like animals do so they relay on their vacuoles being fill of water to keep the upright structure of the plant as water supports the cells and cells support the plant, this is important as the plant needs to stay upright in order for them to absorb sunlight. Water is also needed in cell division when then the plant grows as cells are elongated when filled with water. With out water the plant would not survive, as it would not be able to carry our essence life processes.
Water balance
Water balance is when plants have the right amount of water that allows them to carry out life processes such as photosynthesis where carbon dioxide and water are converted into glucose and oxygen using energy from the sun, and processes such a cell division when then the plant grows as cells are elongated when filled with water. Keeping water balance within the plant allows the plant survive in its given environment. If the plant does not maintain water balance then it will no longer be able to carry out these processes and the plant will not survive in its given environment.
Plants need water in order to carry out many of their essential life functions such as photosynthesis, where water and carbon dioxide are converted unto glucose and oxygen using energy from the sunlight. They also need water in order for their cells to stay turgid as plants do not have skeletons like animals do so they relay on their vacuoles being fill of water to keep the upright structure of the plant as water supports the cells and cells support the plant, this is important as the plant needs to stay upright in order for them to absorb sunlight. Water is also needed in cell division when then the plant grows as cells are elongated when filled with water. With out water the plant would not survive, as it would not be able to carry our essence life processes.
Water balance
Water balance is when plants have the right amount of water that allows them to carry out life processes such as photosynthesis where carbon dioxide and water are converted into glucose and oxygen using energy from the sun, and processes such a cell division when then the plant grows as cells are elongated when filled with water. Keeping water balance within the plant allows the plant survive in its given environment. If the plant does not maintain water balance then it will no longer be able to carry out these processes and the plant will not survive in its given environment.
Water balance
Water balance is when plants have the right amount of water that allows them to carry out life processes such as photosynthesis where carbon dioxide and water are converted into glucose and oxygen using energy from the sun, and processes such a cell division when then the plant grows as cells are elongated when filled with water. Keeping water balance within the plant allows the plant survive in its given environment.
Water balance is when plants have the right amount of water that allows them to carry out life processes such as photosynthesis where carbon dioxide and water are converted into glucose and oxygen using energy from the sun, and processes such a cell division when then the plant grows as cells are elongated when filled with water. Keeping water balance within the plant allows the plant survive in its given environment.
Transpiration
Transpiration is a process, which controls water balance in plants. Many plants have individual adaptations to help the control this process and to control water balance in the plant. Transpiration is when water is evaporated out via the stomata in the leaves. The loss of water through the leaves causes a transpiration pull where water is pulled up through the xylem vessels from the roots. Water enters the root hairs through a process called osmosis this process occurs when there is a concentrate gradient between the roots and the soil, water will move down a concentration gradient from the high concentration of the soil to the low concentration of the roots. The water then moves up through the stem and into the leaves via the xylem vessels the water is able to move against gravity due to the transpiration pull acting on the water particles as when water is lost throughout the leaves more water is pulled up to take its place, this process is called cohesion where water molecules are attracted to each other.
http://tinyurl.com/q3cnhvc
Transpiration is a process, which controls water balance in plants. Many plants have individual adaptations to help the control this process and to control water balance in the plant. Transpiration is when water is evaporated out via the stomata in the leaves. The loss of water through the leaves causes a transpiration pull where water is pulled up through the xylem vessels from the roots. Water enters the root hairs through a process called osmosis this process occurs when there is a concentrate gradient between the roots and the soil, water will move down a concentration gradient from the high concentration of the soil to the low concentration of the roots. The water then moves up through the stem and into the leaves via the xylem vessels the water is able to move against gravity due to the transpiration pull acting on the water particles as when water is lost throughout the leaves more water is pulled up to take its place, this process is called cohesion where water molecules are attracted to each other.
http://tinyurl.com/q3cnhvc
How does the stomata affect transpiration?
The plant by the opening and closing the stomata can control transpiration. There are two guard cells on either side of the stomata that allow it to open and close. If the guard cells are fill of water the stoma will open, if the hard cells are flaccid and low in water the stomata will close meaning less water will be lost via transpiration. In order for the guard cells to become turgid and fill of water the concentration of potassium ions within the guard cells must increase so the concentration of water is is lowered causing more water to move into the guard cells via osmosis down a concentration gradient, as more water moves into the guard cells they will become turgid and therefore open causing more gas exchange to occur but also have a grater rate of water loss and a higher rate of transpiration. If the plant losses a large amount of water the guard cells will become flaccid and close the stomata to prevent the plant losing even more water and therefore the rate of transpiration will decrease.
http://tinyurl.com/b7f2krp
http://tinyurl.com/plp9rbs
Factors that effect transpiration
Many factors can affect the rate of transpiration. Wind can affect the the rate of transpiration as water will be blown of the leaf at faster rate if air movement is greater therefore the concentrate gradient between the outside of the plant compared to the inside of the plant will be greater and the water will diffuse via osmosis out of the leaf at a faster rate causing an increase in transpiration. An increase of light will cause an increase of transpiration as many plants photosynthesis when there is lighter as light energy is needed in this process. Because more photosynthesis is occurring more gases will be exchanged so the stomata will stay open wider for longer therefor as a side affect more water will be lost. If there is more light then there also may be an increase of temperature meaning transpiration will increase as more water will be vaporized as evaporation occurs faster in higher temperatures. Transpiration will decrease in humid conditions as the concentration gradient between the outside of the plant and inside the plant will decrease, as there will be a higher concentration of water surrounding the plant so less water will diffuse out of the plant.
http://tinyurl.com/kobuxju
The plant by the opening and closing the stomata can control transpiration. There are two guard cells on either side of the stomata that allow it to open and close. If the guard cells are fill of water the stoma will open, if the hard cells are flaccid and low in water the stomata will close meaning less water will be lost via transpiration. In order for the guard cells to become turgid and fill of water the concentration of potassium ions within the guard cells must increase so the concentration of water is is lowered causing more water to move into the guard cells via osmosis down a concentration gradient, as more water moves into the guard cells they will become turgid and therefore open causing more gas exchange to occur but also have a grater rate of water loss and a higher rate of transpiration. If the plant losses a large amount of water the guard cells will become flaccid and close the stomata to prevent the plant losing even more water and therefore the rate of transpiration will decrease.
http://tinyurl.com/b7f2krp
http://tinyurl.com/plp9rbs
Factors that effect transpiration
Many factors can affect the rate of transpiration. Wind can affect the the rate of transpiration as water will be blown of the leaf at faster rate if air movement is greater therefore the concentrate gradient between the outside of the plant compared to the inside of the plant will be greater and the water will diffuse via osmosis out of the leaf at a faster rate causing an increase in transpiration. An increase of light will cause an increase of transpiration as many plants photosynthesis when there is lighter as light energy is needed in this process. Because more photosynthesis is occurring more gases will be exchanged so the stomata will stay open wider for longer therefor as a side affect more water will be lost. If there is more light then there also may be an increase of temperature meaning transpiration will increase as more water will be vaporized as evaporation occurs faster in higher temperatures. Transpiration will decrease in humid conditions as the concentration gradient between the outside of the plant and inside the plant will decrease, as there will be a higher concentration of water surrounding the plant so less water will diffuse out of the plant.
http://tinyurl.com/kobuxju