When you suck a cold drink using drinking straw. It resembles with…….
a) flow of material in xylem
b) flow of material in phloem
c) root pressure
d) diffusion
The cells which form platelets are……
a) erythrocytes
b) leukocytes
c) bone marrow cells
d) all of these
A person is transfused with donor’s blood group “O”. his blood group may be…..
a) A
b) B
c) AB
d) all of these
Which of the following chambers has the thickest walls in human heart?
a) right atrium
b) left atrium
c) left ventricle
d) right ventricle
The exchange of materials between the blood and tissues occurs in……
a) arteries
b) veins
c) capillaries
d) arteries and veins
All veins carry deoxygenated blood except the one vein called…..
a) vena cava
b) hepatic vein
c) pulmonary
d) renal
