Agricultural Entomology MCQ Question and Answer | Agriculture MCQ Question

The family of the white fly is Aleyrodidae.
Whiteflies are Hemipterans that typically feed on the undersides of plant leaves. They comprise the family Aleyrodidae, the only family in the superfamily Aleyrodoidea.
Aleyrodidae is small insects, most species with a wingspan of less than 3 mm and a body length of 1 mm to 2 mm. Adult Aleyrodidae has well-developed antennae, which in most species in this family are seven-segmented.
The entire structure is characteristic of the Aleyrodidae and within the family it is taxonomically diagnostic because it varies in shape according to the species.

Trichogramma parasitoid release is recommended for the management of Chilo infuscatellus.
Chilo infuscatellus, the yellow top borer or sugarcane shoot borer, is a moth in the family of Crambidae.
Several natural enemies can reduce the damage done by this pest; these include the tiny wasps of the genera Trichogramma and Telenomus.
Trichogramma species are the most widely exploited and used for pest management across the world. It is important for plant protection because of its widespread natural occurrence and its success as biological control agent by mass releasing.

The scientific name of the leaf hopper or pyrilla is Pyrilla perpusilla Walk.
Pyrilla perpusilla, commonly known as the sugarcane planthopper, is a planthopper in the family Lophopidae. It is native to Asia where it feeds on grasses and other plants and is a major pest of sugarcane and sorghum.
Adult female P. perpusilla lay small batches of eggs on sugarcane leaves, mostly on the underside but sometimes on the upper surface, and during the winter, inside the leaf sheath. The eggs are laid in four or five rows and are protected with filaments of whitish wax protruded by the female. The planthopper feeds on its host by inserting its stylet into a leaf and sucking out the phloem sap.

Halfmoon shaped scarping or notching of the brinjal leaves is due to Myllocerus subfasciantus.
Myllocerus subfasciatus is a species of weevil found in India and Sri Lanka. Adults are known to attack brinjal. Common symptom is the notching of leaf margins. Grubs generally feed on roots causing wilting.
Both adults and grubs scrap the lower epidermis of leaves in a characteristic manner leaving behind stripes of uneaten areas. The leaves give a stifled appearance.

Pupa is green in colour in the case of Anopheles.
Anopheles is a genus of mosquitoes first described and named by J. W. Meigen in 1818.
The pupa is comma-shaped when viewed from the side. The head and thorax are merged into a cephalothorax with the abdomen curving around underneath. As with the larvae, pupae must come to the surface frequently to breathe.
After a few days as a pupa, the dorsal surface of the cephalothorax splits and the adult mosquito emerges. The pupal stage lasts around 2 - 3 days in temperate areas.

Endosulfan is systemic insecticide.
Endosulfan is an off-patent organochlorine insecticide and acaricide that is being phased out globally. It became a highly controversial agrichemical due to its acute toxicity, the potential for bioaccumulation, and role as an endocrine disruptor.
Technical endosulfan is a non-systemic contact and stomach insecticide. It consists of the diastereomers α- and β-endosulfan in the ratio 7 : 3. Both are nonchiral and have significantly different physicochemical properties.
Endosulfan has been used in agriculture around the world to control insect pests including whiteflies, aphids, leafhoppers, Colorado potato beetles and cabbage worms.

The protein content in the raw/fresh pupae of Bombyx mori is 79%.
The domestic silk moth (Bombyx mori) 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. Genetically engineering silkworms to produce proteins, including pharmacological drugs, in the place of silk proteins.
Silkworm pupae are agro-industrial by-products with higher nutritional content having a crude protein content of 50 - 80% in defatted meals with a considerable amount of methionine (2–3% of protein), lysine (6 - 16% of protein) and lipids (21 - 38%).

The nematode which causes less damage in soils with high organic contents is the Lesion nematode.
Pratylenchus is a genus of nematodes known commonly as lesion nematodes. They are parasitic on plants and are responsible for root lesion disease on many taxa of host plants in temperate regions around the world. Root lesion nematodes (RLN) are microscopic worm-like animals that extract nutrients from plants and soil.

Two nerve rings are present in Longidorus sp. and Xiphinema sp.
Longidorus is a genus of needle nematodes. Some of its species are plant pests. They may also transmit important plant viruses such as the potato virus U or the cacao necrosis virus.
Xiphinema is a genus of ectoparasitic root nematodes commonly known as dagger nematodes.
They have a long protrusible odontostyle, with 3 basal flanges at the posterior end of the stylet and relatively posterior guiding nerve rings. The two nerve rings of the hypostomal nervous system.

The structurally and functionally evolved order is Hymenoptera.
Hymenoptera is a large order of insects, comprising sawflies, wasps, bees and ants.
Hymenopterans range in size from very small to large insects, and usually have two pairs of wings. Their mouthparts are adapted for chewing, with well-developed mandibles.
Females typically have a special ovipositor for inserting eggs into hosts or places that are otherwise inaccessible.
This ovipositor is often modified into a stinger. The young develop through holometabolism that is, they have a wormlike larval stage and an inactive pupal stage before they mature.