Agricultural Entomology MCQ Question and Answer | Agriculture MCQ Question

The large basicoxite in the case of Neuroptera and Lepidoptera is called Meron.
Posterior to the point of articulation, the basicoxite is called the meron and in insects such as adult Neuroptera and Lepidoptera, it can be quite large.
In higher Diptera, the meron is detached from the coxa and forms a plate in the mesothoracic pleuron.

Prickly pear weed has been effectively controlled by Dactylopious tomentosus.
Prickly pear is a general term used to describe the Opuntia species, members of the Cactaceae family. Native to the Americas, prickly pear is a spiny, drought-resistant succulent that rapidly invades pastures and natural areas and overwhelms other vegetation.
Dactylopius tomentosus is a cochineal insect whose host range is restricted to Cylindropuntia species. This insect has been utilized successfully for biological control.

Powlowskys gland lubricating the mouth parts is found in Siphunculata.
Sucking lice (Anoplura, formerly known as Siphunculata) have around 500 species and represent the smaller of the two traditional superfamilies of lice.
The Anoplura are all blood-feeding ectoparasites of mammals. They only occur in about 20% of all placentalian mammal species and are unknown from several orders of mammals. They can cause localized skin irritations and are vectors of several blood-borne diseases.

Pheromones are Exohormone and Ectohormone in origin.
A pheromone is a secreted or excreted chemical factor that triggers a social response in members of the same species. Pheromones are chemicals capable of acting like hormones outside the body of the secreting individual, to affect the behavior of the receiving individuals.
Pheromones are also sometimes classified as ecto-hormones. These chemical messengers are transported outside of the body and affect neurocircuits.

In Wasp insects, Ovipositor is modified into spine.
The ovipositor is a tube-like organ used by some animals, especially insects, for the laying of eggs. In insects, an ovipositor consists of a maximum of three pairs of appendages.
In the wasp genus Megarhyssa, the females have a slender ovipositor several inches long like spine that is used to drill into the wood of tree trunks. These species are parasitic in the larval stage on the larvae of horntail wasps, hence the egg must be deposited directly into the host's body as it is feeding. The ovipositors of Megarhyssa are among the longest egg-laying organs.

Isyndus heroes reduviid bug is predaceous on mango leaf hopper.
The Reduviidae is a large cosmopolitan family of the order Hemiptera. Reduviidae are some blood-sucking ectoparasites in the subfamily Triatominae.
Adult mango leafhoppers are golden-brown or dark brown, wedge-shaped insects about 4 - 5 mm in length that look rather like a small cicada. When disturbed, the adults jump off the plant with a clicking sound, fly a short distance and then quickly resettle on the plant.

Arabis mosaic disease is caused by X. diversicaudatum.
Arabis Mosaic Virus, a Cause of Cuorotic Symptoms in Leaves of Fmxinus excelsior L. Arabis mosaic virus (AMV) was detected in leaves of four Fraxinm excelsior L. trees showing chlorotic mottling, chevrons, or oak-leaf patterns and growing in soil infested with virus-carrying Xiphinema diversicaudatum Micol.
Xiphinema diversicaudatum Thorne is often present in greenhouse rose crops. This ectoparasitic nematode, measuring 4 - 5 mm in length at the adult stage (Figure 1c), produces root galls at the tip of feeder rootlets. These galls are characterized by swollen and curled tips.

The synonym of hemipteran is Rhynchota.
The present members of the order Hemiptera (sometimes referred to as Rhynchota) were historically placed into two orders, the so-called Homoptera and Heteroptera/Hemiptera, based on differences in wing structure and the position of the rostrum.
Hemiptera is an order of insects, commonly called true bugs, comprising over 80,000 species within the cicadas, aphids, planthoppers, leafhoppers, assassin bugs, bed bugs, and shield bugs. They range in size from 1 mm (0.04 in) to around 15 cm (6 in) and share a common arrangement of piercing-sucking mouthparts.

Corcyra is attracted to green light.
The rice moth, Corcyra cephalonica, is used as the laboratory host of Trichogramma. Eggs of C. cephalonica were found to be superior to other hosts in the quality of mass-reared parasitoids.
The eggs of these insects are used as diet to mass multiply the bio-agent like Trichogramma spp.

Pest has nymphal and pupal stages and also makes T-shaped marks while emerging from pupal case is Whitefly.
Whiteflies are Hemipterans that typically feed on the undersides of plant leaves. The egg is elongated, with one narrow end produced into a pedicel, which in some species is longer than the rest of the egg. After fertilization, the pedicel shrivels into a stalk.
There are seven life stages, egg, four nymphal instars, pupal stage, and adult. Females occasionally lay eggs in circles on the undersides of leaves of plants with smooth leaves. Egg laying on plants with pubescent leaves results in random placement of the eggs.