HORTICULTURE

Detailed explanation-1: -Insects (mosquitoes, lice, fleas, bed bugs) and ticks are able to transmit a number of diseases caused by infectious agents: viruses (chikungunya virus, yellow fever, dengue fever, etc.), bacteria (Lyme disease, plague, etc.), parasites (malaria, sleeping sickness, leishmaniasis, filariasis, etc.).

Detailed explanation-2: -Many of these vectors are bloodsucking insects, which ingest disease-producing microorganisms during a blood meal from an infected host (human or animal) and later transmit it into a new host, after the pathogen has replicated.

Detailed explanation-3: -Some are direct pests in that they attack the body of the host organism (plant or animal) and either suck sap or blood or eat the tissues. Indirect pests are mostly concerned with the transmission of pathogens or parasites causing disease.