Agricultural Entomology MCQ Question and Answer | Agriculture MCQ Question

The family of the insect order Hemiptera having distinct corium, clavus and cuneus in hindwing is Miridae.
The Miridae are a large and diverse insect family at one time known by the taxonomic synonym Capsidae. It is the largest family of true bugs belonging to the suborder Heteroptera; it includes over 10,000 known species, and new ones are being described constantly.
Miridae is small, terrestrial insects, usually oval-shaped or elongated and measuring less than 12 millimetres (0.5 in) in length. Many of them have a hunched look, because of the shape of the prothorax, which carries the head bent down.

The scientific name of the American cotton is Gossypium hirsutum.
Gossypium is a genus of flowering plants in the tribe Gossypieae of the mallow family, Malvaceae, from which cotton is harvested. It is native to tropical and subtropical regions of the Old and New Worlds.
Gossypium hirsutum, also known as upland cotton or Mexican cotton, is the most widely planted species of cotton in the world. Globally, about 90% of all cotton production is of cultivars derived from this species.

The first biological control agent used against white ants in India is Red ants.
Biological control or biocontrol is a method of controlling pests, such as insects, mites, weeds, and plant diseases, using other organisms.
Parasites, pathogens, and predators can impact fire ant populations directly by killing ants or indirectly by making them less competitive with native ants for available resources. Native ants compete with red imported fire ants for food.

Gummosis and Crown toppling in coconut are due to Red palm weevil.
The palm weevil Rhynchophorus ferrugineus is one of two species of snout beetle known as the red palm weevil, Asian palm weevil or sago palm weevil.
The lesions can become longer and appear more like a crack after the nut grows if it stays attached to the palm. They may have gum oozing out of them (gummosis). This damage often causes the young nuts to die and fall early.
In crown toppling, the crown wilts first, and lower leaves will follow, due to damage to vascular tissue. Major symptoms such as crown loss or leaf wilt are usually only visible long after the palm has become infested.

A. Little leaf of Brinjal ⇔ Aphid is not correctly matched as aphid is not vector of little leaf of brinjal.
Little leaf of brinjal or eggplant (Solanum melongena L.) is one of the most serious diseases of brinjal in the areas of its cultivation. The disease is caused by a plant pathogenic mollicute, Phytoplasma and is transmitted by the insect vector, Hishimonus phycitis.
B. Rice dwarf ⇔ Zig Zag leaf hopper
The zigzag leafhopper Maiestas dorsalis (Hemiptera) is a tungro virus vector that causes damage to rice plants. Grassy weeds and volunteer rice in fallow fields attract the zigzag leafhopper and the viruses it transmits to exist between rice crops.
C. Rice grassy stunt ⇔ Green leaf hopper
Rice grassy stunt virus (RGSV) is a plant pathogenic virus transmitted by the brown planthopper, Nilaparvata lugens, and two other Nilaparvata species, N. bakeri and N. muiri.
D. Rice yellow orange leaf ⇔ Zig Zag leaf hopper
Rice orange leaf phytoplasma (ROLP) belongs to the “Candidatus Phytoplasma asteris”, which is solely transmitted by the zigzag-striped leafhopper and the green leafhopper.

Presence of coarse annules is the distinct feature of Criconematidae family.
The family Criconematidae is a remarkable group of nematodes, containing roughly 600 nominal root-ectoparasitic species, of which many species are known to be significant agricultural pests.
Females of Criconemoides myunsugae are characterized by having a ventrally curved body, retrorse annuli with lateral fields marked by discontinuous breaks and anastomoses of transverse striae.
Nematode population can be clearly distinguished from Criconemoides morgensis by first annulus (disc-like vs not disc-like), spermatheca, smaller body length, smaller stylet length, and other measurements.

The damaging stage of cotton jassid Nymph and adult.
Jassids are also called Leaf Hoppers Adults are small greenish coloured insects. Edges of leaves curl and turn yellow and later become reddish-brown. The remainder of the leaf is often covered with small yellow spots on the lower surface. The leaves then usually dry up and shed.
Damage is caused by the nymphs and adults of Amrasca insect. They suck the plant sap and introduce salivary toxins which are capable of damaging the tissue and impairing photosynthesis.

The field rats are controlled by Zinc phosphide.
Zinc phosphide has been used widely as a rodenticide. Upon ingestion, it gets converted to phosphine gas in the body, which is subsequently absorbed into the bloodstream through the stomach and the intestines and gets captured by the liver and the lungs.

Stripping of sugarcane leaves minimizes the attack of Mealy bugs.
It is a hand tool for stripping leaves and detopping of cane after harvest. The stripper works by separating and pushing the leaf sheaths away from stalk. A knife welded on the stem of the stripper allows detopping of canes.
The purpose of stripping is to remove residue from oils, detergents, minerals, and softeners, not stain removal. Stripping is commonly used in industrial applications to remove harmful contaminants from waste streams.

Malathion insecticide belongs to organophosphate group.
Malathion is an organophosphate insecticide. It possesses relatively low toxicity compared with other organophosphates.
Malathion is a pesticide that is widely used in agriculture, residential landscaping, public recreation areas, and in public health pest control programs such as mosquito eradication.
Malathion is an acetylcholinesterase inhibitor, a diverse family of chemicals. Upon uptake into the target organism, it binds irreversibly to the serine residue in the active catalytic site of the cholinesterase enzyme.