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Answer :
Parasite:
1.Organisms that derive nutrition from the body of other living organisms(host) are called parasites.
2.They harm the source either by creating an infection or consuming its blood.
3.They take the ready-made food from the host.
4.They don't help in cleaning the environment.
Example: Roundworm
Saprophyte:
1.Organisms that derive nutrition from dead and decaying matter are called saprotrophs.
2.It doesn't harm the source as the source is already dead.
3.They take the ready-made food from the host.
4.They help in cleaning the environment as they feed on dead and decaying matter.
Example: Fungi