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Journey of a Water Drop Through a Plant. Alia Al-Khater. Introduction.
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Journey of a Water Drop Through a Plant Alia Al-Khater
Introduction We have probably all seen a plant grow to become a great size and even healthy, but what do they need in order to grow or even survive? Us humans need food, the same as how cars need petrol, it’s the same for plants; plants need water to grow and live. There is a specific journey on how the water travels through the plant and soon you will find out how.
Introduction (continued) Xylem:The vascular tissue in plans that conducts water and dissolved nutrients upward from the root and also helps to form the woody element in the stem. Phloem: The vascular tissue in plants that conducts sugars and other metabolic products downward from the leaves.
The Four Stages There are four main stages during this journey. In the journey of water travelling through a plant, water first moves from the ground up to the roots. When in the roots, the water then moves straight up the stem. After that the water enters the leaves. Lastly, after the water enters the leaves you are about to begin your last stage. The final part of this journey is for the water to exit the plants. The journey is now complete.
Stage 1 Water movement in plants start with the water entering the roots from the soil. When the water enters a root, it would enter where the hair on the root grows. The surface of the root hairs need to be close to the soil in order for it to pick up the water. Once the water enters the root it will spread and at some point the water will reach the xylem.
Pathways In order for the water to reach the xylem it needs to take a certain pathway to get there. There are three different pathways/routes for the water to take. The apoplastic route, symplastic route, or the transmembrane path.
Stage 2 In a plants stem there is something called the xylem (The xylem is the part of the plant which the water and nutrients are carried up, the tubes) and phloem. The phloem takes water and nutrients up the stem for the rest of the plant.There are cells in the stem that pull up the water.
Stage 3 Photosynthesis is a process that turns carbon dioxide into organic compounds, especially sugars using sunlight. Many kinds of algae, plants, protists and bacteria use it to get food. Photosynthesis is very important for life on earth. Most plants either directly or indirectly depend on it. The exception are certain organisms that directly get their energy from chemical reactions; these organisms are called chemoautotroph's. When photosynthesis happens, the plan will have quite some water and oxygen. Stomata: Any of the minute pores in the epidermis of the leaf or stem of a plant, forming a slit of variable width that allows movement of gases in and out of the intercellular spaces.
Stage 4 Transpiration is the evaporation of water/loss of water from those parts of plants that are outside earth, especially leaves but also stems, flowers and fruits. The amount of water lost by a plant depends on its size, along with the surrounding light intensity, temperature, humidity, wind speed, and soil water supply. Water is moved out of the leaf and into the sky because of respiration.
