6 Questions
What is the process by which water molecules move across a membrane?
Osmosis
What is the main force responsible for the upward movement of water and minerals in plants?
Transpiration
How do nutrients move across cell membranes?
Active transport
How do root cells obtain nutrients from soil?
By active transport
What is responsible for the movement of water and minerals upward in plants?
Transpirational pull
What is the cohesion-tension model?
A model that explains the movement of water and minerals upward in plants
Study Notes
- Diffusion is the movement of particles from high to low concentration.
- Osmosis is the diffusion of water molecules across a membrane.
- Active transport is needed for nutrients to move across cell membranes.
- Root cells have a higher concentration of nutrients than soil, so water moves into roots by osmosis.
- Long-distance transport in xylem is accomplished by root pressure and transpirational pull.
- Cohesion and adhesion keep the water column unbroken as it moves up the plant.
- Transpiration is the major force responsible for the movement of water and minerals upward.
- Negative pressure from transpiration creates a pull that moves water up the plant.
- Cohesion-tension model accounts for the majority of water movement in plants.
- Water enters the plant at the roots as the column of water is being pulled up by transpiration, cohesion, and adhesion.
Test your knowledge of plant physiology with this quiz on water transport! From diffusion and osmosis to active transport and the cohesion-tension model, this quiz covers the basics of how plants move water and nutrients. Keywords include: diffusion, osmosis, active transport, root pressure, transpirational pull, cohesion, adhesion, transpiration, negative pressure, and water movement.
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