The thickening of walls of arteries is called
Arthritis
Atherosclerosis
Anaeurysm
Both a and c
Stomata open and close due to _____________.
presence of valves
hormonal control
turgor pressure of guard cells
concentration gradient of the gases
The cells that are full of water and rigid are called ________.
support cells
flaccid
turgid
none of the above
The colour of blood in the arteries is _________
bright red
dark red
blue
black
__________ carries oxygenated blood.
pulmonary artery
hepatic portal vein
pulmonary vein
all of the above
The normal blood pressure in man is ___________
80/120 mm Hg
120/80 mm Hg
120/100 mm Hg
100/80 mm Hg
Diapedesis is shown by _______________.
RBC
WBC
platelets
a,b and c
The ascent of sap in plants takes place due to __________.
root pressure
transpiration pull
both a and b
osmosis
Thick muscular walls are present in ___________.
arteries
arterioles
veins
venules
The liquid portion of the blood is called _______
water
plasma
serum
sap
