Immunization is brought about by:
Injecting medicine against the disease
Keeping personal hygiene
Keeping the surroundings clean
Injecting germs itself.
Guard cells help plants to
Photosynthesis
Respiration
Water regulation in cells
All the above
Red blood cells are produced in
liver
brain
bone marrow
plasma
Red blood cells are also known as
erythrocytes
leukocytes
neurocytes
oxycytes
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
Red blood cells are red due to the presence of
haemocyanin
haemoglobin
serotonin
epinephrine
