Question

(143)
The host in which a pathogen neither undergoes development nor cause any disease is called
Biological vector
Reservoir host
Intermediate host
Definitive host​

Answer 1

Answer:

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Answer 2

Answer:

The host in which a pathogen neither undergoes development nor causes any disease is called a reservoir host.

Those animals who provide shelter inside their body for the parasites are called hosts. Parasites can't survive outside the host body, so they find the particular host and lodged inside them.

Hosts are of different types:

1. Biological vector

• They are ones that carry and transmit those parasites which undergo development in them and are transmitted from the main host to the other host.
•  Examples of these types of the host are female anopheles mosquito that transmits plasmodium and female Culex mosquito in the case of Wuchereria.

   

2. Reservoir host

• This host lodges the parasites in their own body because of the unavailability of the main host.
• Neither the parasite undergoes development nor causes the disease to the host.
• Monkeys as the host lodging plasmodium in their body.

   

 3. Intermediate host

• The immature or the larval stage also called the asexual stage of parasites reproduces asexually inside the host body.
• Also called a secondary host.
• Example: Man as secondary host of plasmodium vivax.

   

4. Definitive host

• The adult or the mature stage of the parasite undergoes sexual reproduction inside the body of the host.
• Also referred to as a primary host.
• Man as a primary host of Wuchereria bancrofti is an example.