Dosage and forms of licorice root a) Transpiration is high and absorption is very low. c) Transpiration is very high and absorption is also high. It is a vital phenomenon and depends upon the activity of the living cells of the root. Root pressure is basically the idea that a plant's roots can either maintain a higher or lower pressure based on its surroundings. Blood pressure always is higher when the heart is pumping (squeezing) than when it is relaxing. False Root pressure can move water a short distance up the xylem because of the lower water potential of the xylem in comparison to the water potential in the surrounding cells. Root pressure occurs in the xylem of some vascular plants when the soil moisture level is high either at night or when transpiration is low during the day. Children, pregnant and breastfeeding women, and those with kidney disease, heart disease, or high blood pressure should avoid licorice products. When transpiration is high, xylem sap is usually under tension, rather than under pressure, due to transpirational pull.At night in some plants, root pressure causes guttation or exudation of drops of xylem sap from the tips or edges of leaves. The risk of high blood pressure increases as you age. The root pressure is the pressure which is exerted on the liquid contents of the fully turgid cortex cells of the root, forcing some of it into the xylem vessels and up through the stem. Normal diastolic blood pressure ranges between 60 and 80 mm Hg. It does this in order to promote or discourage nutrient uptake. Root pressure can move water a long distance up the xylem because of the higher water potential of the xylem in comparison to the water potential in the surrounding cells. d) Transpiration and absorption are both low. As per the natural phenomenon of osmosis, the water molecules naturally flows from the area of low mineral concentration to the area of high mineral concentration, and this flow of water into the root pressurizes it. In short plants, root pressure is largely involved in transporting water and minerals through the xylem to the top of the plant. Capillary action and root pressure can support a column of water some two to three meters high, but taller trees--all trees, in fact, at maturity--obviously require more force. Please choose the correct answer … b) Transpiration is very low and absorption is high. In tall plants, root pressure is not enough, but it contributes partially to the ascent of sap. Race. Clearly, there are several studies reporting a close correlation between root pressure exudation, expression of aquaporins, and hydraulic conductivity of the root (e.g. Some plant species do not generate root pressure. 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