Leaves have air spaces to allow for carbon dioxide and oxygen to move into and out of cells for...
Leaves have air spaces to allow for carbon dioxide and oxygen to move into and out of cells for photosynthesis, which causes water to evaporate, and creates greater tension on the mesophyll cells. How do xylem vessels and tracheids prevent collapse in these conditions?
A. photosynthesis is reversed at times to bring together oxygen and hydrogen ions
B. metabolic dehydration reactions provide excess water to replace it
C. the turgor pressure of surrounding cells pushes the mesophyll cells into shape
D. lignin keeps water flowing through the cells
E. rings maintain their tubular shape
Xylem vessels are long specialized vessels within a plant that are used in the transportation of water and nutrients. These xylem vessels are formed of long lines of cells arranged in a line from end to end. The water that flows through these vessels moves as a result of turgor pressure caused by the evapotranspiration of water in the plant from the leaves.
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Xylem vessels and tracheids prevent collapse in conditions where water evaporates and creates greater tension on the mesophyll cells as D. lignin...
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fromChapter 12 / Lesson 8
Learn about xylem functions. Discover what xylem is and how it develops, examine images of what a xylem cell looks like, and study the cohesion tension hypothesis.