MEDIUM
AS and A Level
IMPORTANT
Earn 100
Make a labelled drawing of the pair of guard cells shown in the given figure. Show in your drawing the features of guard cells as described here.
Important Questions on Homeostasis
HARD
AS and A Level
IMPORTANT
Show how the guard cells are adapted for opening and closing the stomata.
MEDIUM
AS and A Level
IMPORTANT
Draw a flow chart diagram to show the stages in opening and closing of a stomata.
MEDIUM
AS and A Level
IMPORTANT
Explain when it is an advantage for plants to close their stomata.
MEDIUM
AS and A Level
IMPORTANT
Outline how ABA functions to stimulate the closure of stomata.
EASY
AS and A Level
IMPORTANT
Outline the role of the kidneys in homeostasis.
MEDIUM
AS and A Level
IMPORTANT
Explain how the cells lining of collecting ducts determine the concentration of the urine that enters the renal pelvis of the kidney.
EASY
AS and A Level
IMPORTANT
The control of the water content of the blood is an example of homeostasis.
Name the part of the body that monitors the water potential of the blood.
EASY
AS and A Level
IMPORTANT
Explain why the control of blood glucose is an example of negative feedback.
