Osmosis is the diffusion of water molecules from a dilute solution (high concentration of water) to a more concentrated solution (low concentration of water) across a selectively permeable membrane.
What is osmosis?
The diffusion of water, from a dilute solution to a more concentrated solution, through a selectively permeable membrane.
The diffusion of water, from a concentrated solution to a dilute solution, through a selectively permeable membrane.
The diffusion of water, from a low concentration to a high concentration through a selectively permeable membrane.
What happens to red blood cells when they are placed in pure water?
They lose water and shrink, becoming wrinkled.
Their size and shape does not change.
They gain water and swell.
Why do plant cells become flaccid in concentrated sugar solutions?
They gain water by osmosis.
They lose water by osmosis.
They lose water by active transport.
What is transpiration?
The movement of water from the root hair cells.
The release of energy in plant cells.
The evaporation of water from the leaves.
What happens to the transpiration rate as temperature increases?
It stays the same.
Why does water loss slow down if a plant is covered with a clear plastic bag?
The humidity increases.
The temperature increases.
The light intensity increases.
What happens to the rate of transpiration if wind speed decreases?
Which piece of apparatus is used to measure water uptake in a plant?
Top pan balance
Which of the following is used to reset a bubble potometer?
The leafy shoot