Which instrument measures root pressure?

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bandmanjoe's profile pic

bandmanjoe | Middle School Teacher | (Level 2) Senior Educator

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Root pressure is measured by an instrument called an auxanometer.  The auxanometer measures plant growth as well as the pressure developed within the xylem cells of roots.  Root pressure is very important in plants of any credible size, as the endoderm will only transport water and nutrients so far up the stem or trunk of the plant.  Water and nutrients are absorbed by the root system of the plant out of the ground and sent, by a combination of osmosis and root pressure, up the endoderm and xylem into the stem of the plant.  From there the nutrients and water are sent to the leaves of the plant, to provide the raw materials necessary to facilitate the process of photosynthesis.  In photosynthesis, water and carbon dioxide are assimilated with radiant energy from the sun, to produce glucose, which is necessary for the plant cells life processes.  Typically, the larger the plant, the greater the root pressure.  Plants like trees may reach hundreds of feet in height, so heightened root pressure is necessary to get the water and nutrients to the uppermost regions of the tree.

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shailsan's profile pic

shailsan | High School Teacher | (Level 1) eNoter

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Auxanometer measure root pressure which is developed in the xylem of the roots can raise water to a certain height.it develope in tracheary elements of xylem.

yulil2000's profile pic

yulil2000 | Student | (Level 1) eNoter

Posted on

Root pressure is measured by an instrument called an auxanometer. The auxanometer measures plant growth as well as the pressure developed within the xylem cells of roots. Root pressure is very important in plants of any credible size, as the endoderm will only transport water and nutrients so far up the stem or trunk of the plant. Water and nutrients are absorbed by the root system of the plant out of the ground and sent, by a combination of osmosis and root pressure, up the endoderm and xylem into the stem of the plant. From there the nutrients and water are sent to the leaves of the plant, to provide the raw materials necessary to facilitate the process of photosynthesis. In photosynthesis, water and carbon dioxide are assimilated with radiant energy from the sun, to produce glucose, which is necessary for the plant cells life processes. Typically, the larger the plant, the greater the root pressure. Plants like trees may reach hundreds of feet in height, so heightened root pressure is necessary to get the water and nutrients to the uppermost regions of the tree.

Sources:

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