Red blood cells are also known as
erythrocytes
leukocytes
neurocytes
oxycytes
Guard cells help plants to
Photosynthesis
Respiration
Water regulation in cells
All the above
The eradication of smallpox has been certified by WHO in the year
1979
1976
1989
1986.
Immunization is brought about by:
Injecting medicine against the disease
Keeping personal hygiene
Keeping the surroundings clean
Injecting germs itself.
Red blood cells are red due to the presence of
haemocyanin
haemoglobin
serotonin
epinephrine
