The main cells present in lymph are ___________.
red blood cells
platelets
lymphocytes
monocytes
Blood fails to clot in the absence of __________.
magnesium
calcium
sulphur
potassium
Deoxygenated blood is carried by _____________.
pulmonary artery
hepatic vein
renal 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
The double membraned structure surrounding the heart is called _____________.
plasmalemma
pleural membrane
tonoplast
pericardium
The roots absorb water through _______________.
epidermal hairs
root hairs
root xylem
root phloem
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
The ascent of sap in plants takes place due to __________.
root pressure
transpiration pull
both a and b
osmosis
Much of the transpiration takes place through ___________.
stomata
lenticels
cuticle
epidermis
Minerals are absorbed into the cells by _____________.
diffusion
active transport
a, b or c
