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Transportation in Plants (7. Transport of food (The transport of the…
Transportation in Plants
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2. Lymph (Human contd..)
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Through the pores present in the walls of the capillaries, some amount of the plasma, blood cells & proteins come out into the inter-cellular spaces of the tissues to form lymph
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Lymph drains into lymphatic capillaries which join larger lymph vessels that finally open into veins
Function: Lymph carries digested fat from intestine and drains excess fluid from inter-cellular spaces back to the blood
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Transport in Plants
Plants move energy stores from leaves to all parts of the body & water and minerals from roots to all parts of the body
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5. Transport of Water
At the roots, cells that are in contact with the soil actively take up ions
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Thus there is a steady movement of water into the root Xylem, and the column of water is steadily pushed upwards
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The evaporation of water through the stomata of the leaves (transpiration) creates a suction that pulls water from the xylem cells of the roots
In xylem tissue, vessels and tracheids of the roots, stems & the leaves are interconnected to form a continuous water-conducting channel
6. Transpiration
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During the day. when the stomata are open, transpiration pull becomes the major driving force in the transport of water up the xylem
7. Transport of food
The transport of the soluble products of photosynthesis from the leaves to all parts of the plant through the phloem is called translocation
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These are especially delivered to the storage organs such as roots, fruits, seeds & growing organs
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The translocation of food takes place through the sieve tubes with the help of the adjacent companion cells
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