Yellow fever is mainly transmitted among humans by
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Human blood platelets releases ___ which helps in clotting of blood.
___, found in blood, is responsible for oxygen transportation.
Name the organ where the embryo develops:
The instrument used to examine a person's digestive tract is called ___.
Bacteria, blue-green algae or cyanobacteria and mycoplasma are examples of organisms of which kingdom?
Which of the following is a bisexual flower?
Which of the following is the largest group of animals?