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Explanation Plants use vascular tissues to transport water, nutrients, carbohydrates, and hormones throughout their structures. Vascular tissues consist of xylem and phloem, which are responsible for the movement of these substances. Xylem transports water and minerals from the roots to the rest of the plant, while phloem transports nutrients, carbohydrates, and hormones from the leaves to other parts of the plant. This transportation system allows plants to distribute essential resources and chemical signals to support their growth, development, and overall functioning.
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2.
What direction does xylem flow? What direction does Phloem flow?
Explanation Xylem is responsible for transporting water and minerals from the roots to the leaves. It flows in an upward and outward direction, against gravity, due to the cohesion and adhesion properties of water. Phloem, on the other hand, transports sugars and other organic molecules from the leaves to the rest of the plant. It usually flows in a downward direction, from the leaves to the roots, driven by osmotic pressure.
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3.
What is Transpiration?
Explanation Transpiration is the process by which plants lose water through evaporation from their leaves. This evaporation occurs through small openings called stomata, which are primarily found on the surface of leaves. Transpiration plays a crucial role in the movement of water within plants, as it creates a negative pressure gradient that helps to pull water up from the roots to the leaves. This process is known as the transpiration pull, and it is the main driving force behind water transport in plants.
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4.
The ___ of ___ ___ the pressure in the leaves and water ___ ___ from the ___ where there is a ___ ___. When the ___ moves ___ from the ___, the cell ___ from the root cells allow ___ ___ and ___ ___ to enter. ___ and ___ flow occurs through the ___.
5.
Transpiration is accomplished through what two factors?
Explanation Transpiration is the process by which water is evaporated from the leaves of plants and released into the atmosphere. Cohesion refers to the attraction between water molecules, which allows them to stick together and form a continuous column of water in the plant's xylem vessels. Adhesion refers to the attraction between water molecules and the walls of the xylem vessels. These two factors, cohesion and adhesion, work together to facilitate the movement of water from the roots to the leaves of a plant during transpiration.
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6.
Cohesion refers to the... and adhesion refers to the...
Explanation Cohesion refers to the tendency of water molecules to stick to each other, which allows for the formation of water droplets and the movement of water in a continuous column. Adhesion, on the other hand, refers to the tendency of water molecules to stick to the walls of the xylem tubes, which helps in the transportation of water from the roots to the leaves of plants.
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7.
What is translocation?
Explanation Translocation is the process of transporting carbohydrates produced by photosynthesis in the leaf cells to other plant cells. This transportation occurs through phloem cells, which are specialized for the movement of sugars and other organic molecules in plants.
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8.
What does the "source" refer to? What does "sink" refer to?
Explanation The source refers to the leaves or the stems where photosynthesis occurs. During photosynthesis, plants use sunlight to convert carbon dioxide and water into glucose and oxygen. The glucose produced in the source is then transported to other parts of the plant, where it is stored or used for energy. This process is known as translocation. The places in the plant where the sugars build up are referred to as sinks. Sinks can include fruits, roots, flowers, or any other part of the plant that requires energy or storage.