Agricultural Entomology MCQ Question and Answer | Agriculture MCQ Question

Dengue disease (caused by a virus) is transmitted by Aedes aegypti. Dengue is a viral infection transmitted to humans through the bite of infected mosquitoes. The primary vectors that transmit the disease are Aedes aegypti mosquitoes. The virus responsible for causing dengue, is called dengue virus (DENV).

Bed bug is dorsoventrally compressed insect.
Bed bugs are insects from the genus Cimex that feed on blood, usually at night. These are blood-feeding parasites of humans, chickens, bats and occasionally domesticated animals.
The adult bed bug is a broadly flattened, ovoid insect with greatly reduced wings. The leathery, reduced forewings are broader than they are long, with a somewhat rectangular appearance. The sides of the pronotum are covered with short, stiff hairs.

Bead like mucron is present in Helicotylnchus sp.
Helicotylenchus is a genus of nematodes in the family Hoplolaimidae. They are known generally as spiral nematodes. They are among the most common parasitic nematodes of plants; found in corn, bananas, grass and soybeans.
The female is wormlike and straight or spiral-shaped. The male is similar, but with a smaller anterior end.

Verticilium lecani is the white halo fungus.
Vertilcillium lecani commonly called white halo fungus is found sprouting on the body of coffee green scale Coccus viridis. The fungus is known to cause epizootic when the environmental conditions are favourable.
This fungus was first described in 1861. Insects are infected when they come into contact with the sticky fungal spores which then grow and invade the body, thus the internal organs are consumed, leading to their death.

A silk yarn formed by doubling two or more raw silk threads and then twisting them slightly is known as Tram.
Silk throwing is the industrial process wherein silk that has been reeled into skeins, is cleaned, receives a twist and is wound onto bobbins. The yarn is now twisted together with threads, in a process known as doubling.
Silk had to be thrown to make it strong enough to be used as organzine for the warp in a loom, or tram for weft. Tram was wound, thrown and doubled, organzine was wound, doubled then thrown and doubled again.

Insect used for micro bioassay studies is Housefly maggots and Mosquitoes.
A bioassay is an analytical method to determine the concentration or potency of a substance by its effect on living animals or plants (in vivo), or on living cells or tissues (in vitro).
Microbiological assay helps in estimating active constituents, and biological activity and in monitoring the stability of antibiotics.

Larvae of castor semi looper (Achoea janata) feed gregariously and defoliate the plants belonging to family Noctuidae.
Achaea janata, the castor semi-looper or croton caterpillar, is an erebid moth, the caterpillars of which are termed 'semi-loopers' due to their mode of locomotion.
Caterpillars of most Noctuidae feed on plants; some feed on poisonous plants and are unaffected by their chemical defence.

Sterile insect release method is best suited for Fruit flies.
Fruit flies are reared in millions and sterilized using gamma or x-rays. The sterile males are then released twice a week in the target areas at 100000 to 300000 sterile males per square kilometre. They mate with the wild females which result in infertile eggs being laid.

Antigodu syndrome is caused due to poisoning of Arsenic.

The cockroach belonging to order Dictyoptera as typical of an Orthoptera insect has a Large anal lobe in the hind wing.
Among the orthopterans, cockroaches and mantids are placed in the order Dictyoptera, although they are sometimes placed in Blattodea and Mantodea, respectively, which may be considered as separate orders or as suborders of Dictyoptera.
The tegmina, or first pair of wings, are tough and protective; these lay as a shield on top of the membranous hind wings, which are used in flight. All four wings have branching longitudinal veins, as well as multiple cross-veins.