9. Describe the process of water transport in plants from the roots to the leaves. What roles do xylem, osmosis, and transpiration play in this process? Discuss how environmental factors can affect water transport in plants.

Human Anatomy & Physiology (11th Edition)
11th Edition
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Author:Elaine N. Marieb, Katja N. Hoehn
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Chapter1: The Human Body: An Orientation
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9. Describe the process of water
transport in plants from the roots to
the leaves. What roles do xylem,
osmosis, and transpiration play in this
process? Discuss how environmental
factors can affect water transport in
plants.
1.
2.
3.
0088
Doo
ooooooo
Transpiration draws
water from the leaf.
Cohesion and adhesion
draw water up the xylem.
Negative water potential
draws water into the root.
Mesophyll
cells
Xylem
Stoma
Xylem
Root hairs
Soil particle
Water molecule
Xylem
Low
Water potential gradient
High
Atmosphere:
--100 MPa
Leaf at tip of tree:
--1.5 MPa
Stem: -0.6 MPa
Root cells: -0.2 MPa
Transcribed Image Text:9. Describe the process of water transport in plants from the roots to the leaves. What roles do xylem, osmosis, and transpiration play in this process? Discuss how environmental factors can affect water transport in plants. 1. 2. 3. 0088 Doo ooooooo Transpiration draws water from the leaf. Cohesion and adhesion draw water up the xylem. Negative water potential draws water into the root. Mesophyll cells Xylem Stoma Xylem Root hairs Soil particle Water molecule Xylem Low Water potential gradient High Atmosphere: --100 MPa Leaf at tip of tree: --1.5 MPa Stem: -0.6 MPa Root cells: -0.2 MPa
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