The function of red blood cells is
to defend the body against harmful infections
to transport oxygen and carbon dioxide
to clot the blood in time of injuries
to produce white blood cells
Immunization is brought about by:
Injecting medicine against the disease
Keeping personal hygiene
Keeping the surroundings clean
Injecting germs itself.
The shape of red blood cells is
disc
amoeboid
cuboid
spherical
Red blood cells are produced in
liver
brain
bone marrow
plasma
Red blood cells are ___ white blood cells in size.
equal to
smaller than
larger than
None of these
Guard cells help plants to
Photosynthesis
Respiration
Water regulation in cells
All the above