Agricultural Entomology MCQ Question and Answer | Agriculture MCQ Question

Wota trap is used for Groundnut leaf miner.
Wota Trap is easy to assemble on a single pole. It consists of an adapter, basin to hold water (mixed with kerosene/ detergent) and a lure holder with a canopy. It can be effectively used to trap Sugarcane borers, Tuta moths, Brinjal borers.
Groundnut leaf miner, is a very serious pest of groundnuts both in the rainy and post rainy season crops and is regarded as the most important pest threatening groundnut production in Uganda.

Maggots as predators belong to the family Syrphidae and Cryptochaetidae.
The Cryptochetidae are a small family of tiny flies (generally 2 to 4 mm long). They are metallic blue black, stoutly built, with the head broad and high and with clear wings.
Hover flies or syrphid flies, make up the insect family Syrphidae.
In these species, the larvae also called maggots in case of flies are insectivores and prey on aphids, thrips, and other plant-sucking insects.

Resin found in lac insects is 68%.
Lac is the resinous secretion of several species of lac insects. Lac is harvested by cutting the tree branches that hold sticklac. If dye is being produced, the insects are kept in the sticklac because the dye colour comes from the insects rather than their resin.
Thousands of lac insects colonize the branches of the host trees and secrete the resinous pigment. The coated branches of the host trees are cut and harvested as sticklac.

Endosulfan EC formulations of a pesticide would be most suitable for spraying in a standing crop of rice.
Endosulfan is an off-patent organochlorine insecticide and acaricide that is being phased out. It became a highly controversial agrichemical due to its acute toxicity, potential for bioaccumulation, and role as an endocrine disruptor.
Endosulfan has been used in agriculture around the world to control insect pests including whiteflies, aphids, leafhoppers, Colorado potato beetles and cabbage worms.

The highly evolved insect order is Hymenoptera.
Hymenoptera is a large order of insects, comprising the sawflies, wasps, bees, and ants. The name Hymenoptera refers to the wings of the insects, but the original derivation is ambiguous.
In the more ancestral hymenopterans, the ovipositor is blade-like and has evolved for slicing plant tissues. In some species, the ovipositor has become modified as a stinger, and the eggs are laid from the base of the structure, rather than from the tip, which is used only to inject venom.

Scientific name of banana aphid is Pentalonia nigronervosa.
Pentalonia nigronervosa (banana aphid) is an aphid in the superfamily Aphidoidea in the order Hemiptera. It is a true bug and sucks sap mainly from Musa species.
Banana bunchy top disease is one of the most serious diseases of bananas. The disease is caused by Banana bunchy top virus (BBTV), which is transmitted by banana aphids (Pentalonia nigronervosa Coquerel).

Pro-insecticide is Padan, Cartap and Thiocyclam.
A compound that, on administration, must undergo chemical conversion by metabolic processes before becoming the pharmacologically active insecticide is a proinsecticide.
Padan is a systemic insecticide highly effective against chewing, sucking and boring insects. It is registered for use in rice, crucifiers, cucurbits, onion, potato and mango.
Cartap [S,S ′-(2-dimethylaminotrimethylene)- bis(thiocarbamate)] is a pesticide that was first introduced in Japan in 1967 and has been commonly used to control weeds and caterpillars. Thiocyclam hydrogen oxalate (Evisect) is a broad-spectrum synthetic insecticide used to control the sucking and chewing pets on a variety of crops.

Wilting of groundnut plants in patches with damaged roots is caused by Holotrichia consanguinea.
This is a polyphagous pest both in the grub and adult stages and inflicts heavy damage to the various fruit trees, their nurseries, vegetables, lawns and field crops.
Holotrichia consanguinea is the predominant species of root grub damaging groundnut and in endemic areas, the damage to groundnut ranges from 20% to 100%.

Chitin inhibitor compound is Dimilin.
Chitin synthesis inhibitors (CSIs) are used to control L. salmonis in aquaculture. CSIs act by interfering with chitin formation and molting.
DIMILIN is a chemical insecticide (growth regulator) that works by preventing the formation of chitin, an important structural component of the outer skin of the larvae. L. dispar caterpillars periodically shed their skin (molt) as they grow, forming new larger skins.

Haemocoelus vivipary is observed in insect order that is Strepsiptera.
Haemocoelus vivipary involves embryos developing free in the female's haemolymph with nutrients taken up by osmosis. This form of internal parasitism occurs only in sterpsiptera and some gall midges.
The Strepsiptera are an order of insects with eleven extant families that include about 600 described species. They are endoparasites in other insects, like wasps, leafhoppers, silverfish, and cockroaches.
Strepsiptera eggs hatch inside the female, and the planidium larvae can move around freely within the female's haemocoel this behavior is unique to these insects. The offspring consume their mother from the inside in a process known as hemocelous viviparity.