Agricultural Entomology MCQ Question and Answer | Agriculture MCQ Question

Curling of the leaf upwards and yellowing of terminal cotton shoots is characteristic symptom of presence of Cotton Aphid (Aphis gossypii).
Cotton Leaf Curl Virus (CLCuV) illness is a major impediment to cotton production. It is caused by a genus of viruses known as Begomovirus, which is spread by whiteflies and poses a serious threat to the cotton crop.
The very characteristic symptoms include leaf curling, darkened veins, vein swelling, and enations that frequently develop into cup-shaped, leaf-like structures on the undersides of leaves.

Fish fly belongs to Megaloptera order.
Megaloptera is an order of insects. It contains the alderflies, dobsonflies and fishflies, and there are about 300 known species.
Flying fish live in all the oceans, particularly in tropical and warm subtropical waters. Fully broadened neural arches act as more stable and sturdier sites for these connections, creating a strong link between the vertebral column and cranium.

Pterostigma is a character of the order Odonata.
The pterostigma is a group of specialized cells in the outer wings of insects, which are often thickened or coloured, and thus stand out from other cells.
The pterostigma, a heavier section of the wing than nearby sections, assists in gliding. Without the pterostigmata, self-exciting vibrations known as flutter would set in on the wing above a certain critical speed, making gliding impossible.

Chewing and cutting types of mouth parts are found in Army worms.
The fall armyworm is a species in the order Lepidoptera and one of the species of the fall armyworm moths distinguished by their larval life stage.
It is regarded as a pest and can damage and destroy a wide variety of crops, which causes large economic damage. This is the most destructive life stage as the larvae have biting mouthparts.

Quarantine law was initiated in 1912.
The Plant Quarantine Act, originally enacted in 1912, gave the Animal and Plant Health Inspection Service (APHIS) authority to regulate the importation and interstate movement of nursery stock and other plants that may carry pests and diseases that are harmful to agriculture.
This authority is particularly important to the agency’s ability to prevent or limit the spread of harmful invasive species within or to a state or region of the United States.

A substance released by a non-living material that is favourable to a receiving organism but detrimental to an organism of another species that is found in or on the non-living material is known as Aneumone.

The completely parasitic order is Strepsiptera.
The Strepsiptera are an order of insects with eleven extant families that include about 600 described species.
They are endoparasites in other insects, such as bees, wasps, leafhoppers, silverfish, and cockroaches. Females of most species never emerge from the host after entering its body, finally dying inside it.

The bollworm which covers the opening once it enters into the boll is Pink boll worm.
The pink bollworm is an insect known for being a pest in cotton farming. The adult is a small, thin, gray moth with fringed wings. The larva is a dull white caterpillar with eight pairs of legs with conspicuous pink banding along its dorsum. The larva reaches one half inch in length.
Since cotton is used for both fiber and seed oil, the damage is twofold. Their disruption of the protective tissue around the boll is a portal of entry for other insects and fungi.

The main host tree of silkworms is Mulberry.
The domestic silk moth is an insect from the moth family Bombycidae. It is the closest relative of Bombyx mandarina, the wild silk moth.
The silkworm is the larva or caterpillar of a silk moth. It is an economically important insect, being a primary producer of silk.
A silkworm's preferred food is white mulberry leaves, though they may eat another mulberry.

The inhibitor of sclerotization is MON-0585, α-methyl DOPA, and Dihydroxy Phenyl alanine Decarboxylase (DDC).
Sclerotization is the process of cuticular hardening which typically occurs within a few hours after each moult, due to the formation of cross-links between catecholamines or other phenolics and the protein and chitin fibrillar components of the cuticular matrix.
α-methyl-DOPA (3,4-dihydroxyphenylalanine) and substituted phenols are suicide substrates for special enzymes here. Cyromazine was discovered by Hall and Foehse (1980) and has good activity on Diptera and Lepidoptera.