describe the transportation system in plants
Answers
Explanation:
Plants have tissues to transport water, nutrients and minerals. Xylem transports water and mineral salts from the roots up to other parts of the plant, while phloem transports sucrose and amino acids between the leaves and other parts of the plant.
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Answer:
Plants have two transport systems - xylem and phloem . Xylem transports water and minerals. Phloem transports sugars and amino acids dissolved in water.
Explanation:
Transportation of water
The first step in transportation of water is absorption of water by roots of plants. As the water is absorbed by the roots from the soil and moved to the vascular system, it has to be transported to various parts of the plant. Two forces responsible for transporting the water up in a plant are root pressure and transpiration pull. Root Pressure is the positive pressure created inside the xylem when water follows the ions that are transported against the concentration gradients into the vascular system. However, majority of water is transported through transpiration pull.
Transpiration pull is the pull of water as a result of tension created by transpiration. It is the major driving force of water movement upwards in a plants. It accounts for loss of 99% of water taken by the plant and this loss is mainly through stomata. As the water is released by leaves into the atmosphere, the water level in the intracellular spaces of the leaf decreases. To compensate this water loss, water is brought to the leaves through xylem. Transpiration helps in the absorption of water and minerals to all the parts of the plants.
Transportation of water
The first step in transportation of water is absorption of water by roots of plants. As the water is absorbed by the roots from the soil and moved to the vascular system, it has to be transported to various parts of the plant. Two forces responsible for transporting the water up in a plant are root pressure and transpiration pull. Root Pressure is the positive pressure created inside the xylem when water follows the ions that are transported against the concentration gradients into the vascular system. However, majority of water is transported through transpiration pull.
Transpiration pull is the pull of water as a result of tension created by transpiration. It is the major driving force of water movement upwards in a plants. It accounts for loss of 99% of water taken by the plant and this loss is mainly through stomata. As the water is released by leaves into the atmosphere, the water level in the intracellular spaces of the leaf decreases. To compensate this water loss, water is brought to the leaves through xylem. Transpiration helps in the absorption of water and minerals to all the parts of the plants.