Disease Vectors and Pathogens

Mouth part of mosquito is sucking and piercing type.  

Visceral leishmaniasis (VL), also known as kala-azar, black fever, and Dumdum fever, is the most severe form of leishmaniasis. Leishmaniasis is a disease caused by protozoan parasites of the Leishmania genus.

All stages of Plasmodium get digested in stomach of female Anopheles except the gametocyte. 

An oocyst with one sporoblast is released in stool of infected person. After the oocyst has been released, the sporoblast matures further and divides into two.

Malaria is caused by Plasmodium parasites transmitted through the bite of infected female Anopheles mosquitoes. Cholera is water-borne, chicken pox is viral (airborne), and plague is bacterial (flea-borne from rodents). Malaria remains a major health concern in tropical regions.

Hoppers transmit viruses from several genera, including those in the families Rhabdoviridae and Reoviridae.

Yes, it is the correct answer. 

In biological context, a vector is an organism that transmits disease-causing pathogens from one host to another. Insects like mosquitoes, fleas, and ticks are common vectors. The other terms like transmitter, drones, or conductor are not standard scientific terminology for disease transmission.

AIDS (HIV) and Hepatitis B are primarily transmitted through body fluids like blood, semen, and vaginal secretions. The other diseases listed have different transmission routes - TB is airborne, typhoid and cholera are waterborne/fecal-oral, and rabies spreads through animal bites (saliva).

Wucheraria larvae microfilariae are carried by culex mosquito and causes filaria.

A parasite feeds on a living organism called its host, which provides nutrients and shelter. The parasite benefits from this relationship while often harming the host, though not necessarily killing it immediately.

Roundworm and plasmodium exhibit parasitic nutrition, obtaining nutrients from living host organisms. Roundworms live in the intestines of their hosts, while plasmodium causes malaria by infecting red blood cells.

Filariasis (elephantiasis) is caused by nematode worms Wuchereria bancrofti, Brugia malayi, or Brugia timori. Poliomyelitis is viral, leprosy is bacterial (Mycobacterium leprae), and amoebiasis is protozoan (Entamoeba histolytica).

In the life cycle of Plasmodium, the sexual phase (sporogony) occurs within the mosquito, which is considered the exogenous host or definitive host. The asexual phase (schizogony) occurs within the human, the endogenous or intermediate host.

African sleeping sickness is caused by protozoan parasites of the genus Trypanosoma and is transmitted to humans by the bite of the tsetse fly. Sand flies transmit leishmaniasis, and mosquitoes transmit diseases like malaria and dengue. The yellow wasp is not a known vector for this disease.