Transpiration and root pressure cause water to rise in plants by: #NTA #NEET #NEETquestion #mcq #2021 #Biology

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01 Jan 1970 05:30 AM study24x7

Transpiration and root pressure cause water to rise in plants by: #NTA #NEET #NEETquestion

pulling it upward

pulling and pushing it, respectively

pushing it upward

pushing and pulling it, respectively

NEET / Medical

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Dev kumar

The transpiration process, pulls water upwards with the help ofcohesion and adhesion properties of water molecules. According to transpiration pull theory, due to transpiration, the water column inside the plant comes under tension. This is called 'transpiration puli'. On account of this tension, the water column is pulled up passively from below to top of the plant (almost like a rope). Root pressure is the pressure that forces water, absorbed from the soil, to move through the roots and up i.e., pushes it up) the stem of a plant. Likewise, if you had a very narrow straw, less suction would be required. This correlation occurs as a result of the cohesive nature of water along the sides of the straw (the sides of the xylem). Because of the narrow diameter of the xylem tubing, the degree of water tension, (vacuum) required to drive water up through the xylem can be easily attained through normal transpiration rates that often occur in leaves.

Reply 01 Jan 1970 05:30 AM