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15 Questions

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Parasitism and Parasite Life Cycles

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Questions and Answers

What is the definition of parasitism?

A living organism competes with another living organism for food & shelter

A living organism helps another living organism by providing food & shelter

A living organism gains food & shelter at the expense of another (correct)

A living organism lives on/in another living organism for mutual benefit

What is the role of an Intermediate Host (IH) in a parasite life cycle?

Harbors adult (mature) stage of the parasite

Harbors Larva (immature) stage of the parasite (correct)

Maintains parasite in nature & acts as a potential source of human infection

Plays a role in parasite life cycle without harboring any stage of the parasite

What is the function of a Paratenic Host in a parasite life cycle?

Harbors parasite & plays a role in parasite life cycle without development of the parasite (correct)

Maintains parasite in nature & acts as a potential source of human infection

Hosts adult (mature) stage of the parasite

Provides food & shelter to the parasite without any harm to itself

What is the role of a Reservoir Host (RH) in maintaining parasites in nature?

An animal that harbors the same parasite species & stage as humans, maintaining parasites in nature Signup and view all the answers

Which type of transmission involves an arthropod passively carrying a disease without development or multiplication?

Mechanical transmission Signup and view all the answers

Which type of parasite is characterized by producing disease only in immunocompromised individuals?

Opportunistic Parasite Signup and view all the answers

What is the most common mode of transmission for faeco-oral parasites and food-borne parasites?

Acquired transmission Signup and view all the answers

Which arthropod-borne disease is transmitted by non-biting arthropods carrying microorganisms on their mouth parts, legs, or hairs?

$Y. pestis$ (Plague) Signup and view all the answers

Which type of helminth is characterized by being flat, leaf-shaped, and hermaphroditic?

$Trematoda$ Signup and view all the answers

'Scabies' is caused by which arthropod?

$Sarcoptes scabiei$ (Mite) Signup and view all the answers

'Yellow fever' is transmitted by which biological transmission type involving arthropods?

$Cyclo-developmental$ Signup and view all the answers

Which type of protozoa is characterized by having jointed limbs and an exoskeleton?

Sporozoa Signup and view all the answers

Which organism is responsible for transmitting diseases from infected mother to offspring through the eggs?

Ticks Signup and view all the answers

Which type of helminth is characterized by being round/cylindrical and unisexual?

Nematoda Signup and view all the answers

Which type of parasite passes from animal to human indirectly via a vector?

Zoonotic Parasite Signup and view all the answers