The main cells present in lymph are ___________.
red blood cells
platelets
lymphocytes
monocytes
The double membraned structure surrounding the heart is called _____________.
plasmalemma
pleural membrane
tonoplast
pericardium
Stomata open and close due to _____________.
presence of valves
hormonal control
turgor pressure of guard cells
concentration gradient of the gases
Minerals are absorbed into the cells by _____________.
osmosis
diffusion
active transport
a, b or c
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
a,b and c
Blood is composed of ___________.
plasma and red blood cells
plasma and formed elements
red and white blood cells
red blood cells, white blood cells and platelets
Transpiration takes place from ________________.
all parts of the plant
roots
only the aerial parts
stem
The liquid portion of the blood is called _______
water
plasma
serum
sap
__________ carries oxygenated blood.
pulmonary artery
hepatic portal vein
pulmonary vein
all of the above
