WHAT ARE PARASITES?
Answers
Answer:
an organism that lives in or on an organism of another species (its host) and benefits by deriving nutrients at the other's expense.
Answer:
hope it is clear to you please mark as brilliant answer
Explanation:
A parasite is an organism that lives in or on an organism of another species.
Three main classes of parasites can cause disease in humans: protozoa, helminths, and ectoparasites. Protozoa and helminths largely affect the gut, while ectoparasites include lice and mites that can attach to or burrow into the skin, staying there for long periods of time.
The majority of protozoa and helminths tend to be non-pathogenic (meaning they don’t cause disease) or result in very mild illness. Some, however, can cause severe disease in humans.
Faecal-oral transmission, where parasites found in the stool of one person end up being swallowed by another person, is the most common mode of transmission of parasitic protozoa and helminths.
The initial symptoms tend to be gastrointestinal symptoms like diarrhoea. When parasites invade the red blood cells or organs, the consequences can become more serious.