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Pregunta 61

Which load does xylem carry from the roots to the rest of the plant?

  1. Water together with the sugar the leaves have made
  2. Ready-made food that the plant absorbed from the soil
  3. Sugar made in the leaves
  4. Water and dissolved mineral ionsRespuesta correcta

Explicación

Xylem takes up what the roots have absorbed, namely the water that enters the root hairs together with the mineral ions dissolved in that water, and moves the whole load upwards. Sugar has no place in this load, because sugar is built in the leaves and is loaded into the other transport tissue, so a description that puts sugar in xylem is really describing phloem.

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Pregunta 61: Which load does xylem carry from the roots to the rest of… · Plants and Photosynthesis · Questena