HARD
AS and A Level
IMPORTANT
Earn 100
If sucrose is actively loaded into a companion cell, which combination of changes take place in the cytoplasm of companion cells?
50% studentsanswered this correctly
Important Questions on Transport in Plants
HARD
AS and A Level
IMPORTANT
Which of the following correctly describes the pressure of the two types of elements?
HARD
AS and A Level
IMPORTANT
The figure shows diagrams of T.S of two plant organs, X and Y, containing vascular tissue. Which of the following rows correctly identifies the tissues?
MEDIUM
AS and A Level
IMPORTANT
Movement of water from a root hair to xylem cannot take place entirely through the apoplast pathway due to cell in the
HARD
AS and A Level
IMPORTANT
Explain how water moves from the soil into a root hair cell.
HARD
AS and A Level
IMPORTANT
Explain how water moves from one root cortex cell to another.
HARD
AS and A Level
IMPORTANT
Explain how water moves from a xylem vessel into a leaf mesophyll cell.
HARD
AS and A Level
IMPORTANT
Arrange the following in order of water potential. Use the symbol to mean 'greater than'.
Dry atmospheric air, Mesophyll cell, Root hair cell, Soil solution, Xylem vessel contents
HARD
AS and A Level
IMPORTANT
An instrument called a dendrogram can be used to measure small changes in the diameter of a tree trunk. The instrument usually shows that the diameter of the tree trunk is at its lowest during daylight hours and at its greatest at night. Suggest an explanation for these observations.
