Agricultural Entomology MCQ Question and Answer | Agriculture MCQ Question

The insect family whose larvae are called 'Flat headed borers' is Buprestidae.
Buprestidae is a family of beetles known as jewel beetles or metallic wood-boring beetles because of their glossy iridescent colors. Larvae of this family are known as flatheaded borers.
The elytra of some Buprestidae species have been traditionally used in beetlewing jewellery and decoration in certain countries in Asia, like India, Thailand and Japan.

Most serious pest of wheat is Termite.
Termites damage the crop soon after sowing and sometimes near maturity. They feed on roots, the stem of growing plants, and even dead tissues of plant feeding on cellulose.
The damaged plants dry up completely and are easily pulled out. The plants damaged at later stages give rise to white ears.

Degenerated ocelli of cockroach is called is Fenestra.
The ocelli are paired circular areas one on each side of the eye, near the base of the antennae. Each area acts as a simple eye and is responsible for detecting light.
Ocelli or fenestrae of cockroach take part in perception of light. They help the cockroaches to detect food and other objects. Fenestrae are simple eyes.

The dwelling place of termites is also known as Mound.
The meaning of Mound is to enclose or fortify with a fence or a ridge of earth. It is a heaped pile of earth, gravel, sand, rocks, or debris.
Mound-building termites are a group of termite species that live in mounds. The structure of the mounds can be very complicated. Inside the mound is an extensive system of tunnels and conduits that serves as a ventilation system for the underground nest.

Cell necrosis of localized areas is induced by Helicotylenchus.
Helicotylenchus is a genus of nematodes in the family Hoplolaimidae. They are known generally as spiral nematodes.
Helicotylenchus multicinctus causes small necrotic lesions on roots, and with heavy infestation these lesions coalesce, leading to root necrosis and die-back of roots. Plant stunting and reduction in yield. It can cause enough root necrosis that it seriously weakens the plant.

Dimethoate is Systemic insecticide.
Dimethoate is a widely used organophosphate insecticide and acaricide. It was patented and introduced in the 1950s by American Cyanamid. It is readily absorbed and distributed throughout plant tissues, and is degraded relatively rapidly.
Dimethoate is a systemic and contact organophosphorus insecticide registered for use in the U.S. in 1962 and used on several field grown crops, tree crops and ornamentals.

Arborescent malphighian tubules are found in Galleria sp.
The Malpighian tubule system is a type of excretory and osmoregulatory system found in some insects, myriapods, arachnids and tardigrades.
Arborescent refers to resemblance as a tree in growth or appearance. And the malphigian tubule system consists of branching tubules that resemble branches of trees extending from the alimentary canal that absorbs solutes, water, and wastes from the surrounding hemolymph.

Hypermetamorphosis is observed in Mantispidae.
Hypermetamorphosis is a term used mainly in entomology; it refers to a class of variants of holometabolism, that is to say, complete insect metamorphosis. In hypermetamorphosis some larval instars are functionally and morphologically distinct from each other.
Hypermetamorphosis usually occurs as an adaptation of the ontogeny of certain parasitoid insects, notably in the Neuropteran family Mantispidae.

Peg-like mucron is present in Hirschmaniella sp.
Hirschmanniella oryzae, i.e. rice root nematode (RRN), is among the major pests of rice and is the most common plant-parasitic nematode found on irrigated rice.
The phasmids of this species are located in the posterior third of the tail, which is three to five times as long as the body width at the anus, tapering, and usually terminating in a point or mucron.

The first longitudinal wing vein is the Costal vein.
The wings are strengthened by several longitudinal veins, which often have cross-connections that form closed "cells" in the membrane.
The veins (and their branches) are named according to a system devised by John Comstock and George Needham the Comstock Needham system.
The costa (C) is the leading marginal vein in most insects. The costa rarely ever branches because it is at the leading edge, which is associated at its base with the humeral plate.