Agricultural Entomology MCQ Question and Answer | Agriculture MCQ Question

a. Badna is a member of Rice Tungro.
Rice tungro bacilliform virus (RTBV) is a plant pararetrovirus whose DNA genome comprises caulimoviruses, and badnaviruses, etc. Rice tungro disease is caused by the combination of two viruses, which are transmitted by leafhoppers.
b. Luteo is a member of potato leaf roll virus.
Luteovirus is a genus of viruses, in the family Tombusviridae. There are 13 species in this genus. Plants serve as natural hosts. Luteovirus was given this name due to the symptomatic yellowing of the plant that occurs as a result of infection.
c. Poty is the member of potato virus.
Potato virus Y (PVY) is a plant pathogenic virus of the family Potyviridae, and one of the most important plant viruses affecting potato production. PVY belongs to the genus Potyvirus, the largest genus of plant viruses and possibly the most destructive one in potato crops.
d. Tospo is the member of tomato spotted wilt virus.
TSWV is Tomato spotted wilt orthotospovirus belongs to tospo genus which is transmitted by thrips, causes serious losses in economically important crops and it is one of the most economically devastating plant viruses in the world.

Haltere present in which order Diptera.
Halteres are a pair of small club-shaped organs on the body of two orders of flying insects that provide information about body rotations during flight.
Insects of the large order Diptera (flies) have halteres that evolved from a pair of ancestral hindwings, while males of the much smaller order Strepsiptera (stylops) have halteres that evolved from a pair of ancestral forewings.

Dead hearts in the wheat central shoot is a characteristic symptoms of Stem borer (Sesamia inferens).
The pink borer (Sesamia inferens Walker) lays spherical, yellowish white eggs in batches of 30 - 100 eggs in two to three parallel lines on the leaf sheaths or the leaf surface.
The larva is pinkish, smooth, and measures about 30 mm when fully grown. It produces deadheart symptoms due to the internal feeding of the larvae.

Potato tuber moth pest of potato attacks the tuber both in field and in storage.
They attack potatoes in the field and storage. The larvae mine the young leaves and tunnel into the tubers, leaving frass (faeces and other remains) from tunneling at the entrance.
When the larvae leave the tunnels, fungi, bacteria and mites take over, and tubers rot and have an unpleasant smell.

The most notorious polyphagous pest is Helicoverpa armigera.
Helicoverpa armigera is a species of Lepidoptera in the family Noctuidae. It is known as the cotton bollworm, corn earworm, Old World (African) bollworm, or scarce bordered straw. The larvae feed on a wide range of plants, including many important cultivated crops.
It is a major pest in cotton and most polyphagous and cosmopolitan pest species.
The cotton bollworm is a highly polyphagous species. The most important crop hosts are tomato, cotton, pigeon pea, chickpea, rice, sorghum, and cowpea.

Kelthane is the acaricide widely recommended for mite management.
Kelthane 50 WSP Miti- cide is a specific contact miticide recommended for use on trees, shrubs, foliage plants, listed fruit-bearing trees and flowers in outdoor plantscapes, nurseries and greenhouses.
Acaricides are pesticides used to kill ticks and mites. Acaricides include chlorinated hydrocarbons, organophosphorous compounds, carbamates, pyrethroids, formamidines and avermectins.

Sawfly belongs to the group Hymenoptera.
Sawflies are the insects of the suborder Symphyta within the order Hymenoptera, alongside ants, bees, and wasps. Sawflies are hosts to many parasitoids, most of which are parasitic Hymenoptera; more than 40 species are known to attack them.
The common name comes from the saw-like appearance of the ovipositor, which the females use to cut into the plants where they lay their eggs.

Vapour heat treatment and hot air treatments for nematode control were introduced by K. Marcinowski.
Vapour heat treatment is a method of heating fruit with air saturated with water vapour (humidified by injection of steam) at temperatures of 40° - 50°C to kill insect eggs and larvae as a quarantine treatment before fresh market shipment. Vapour heat was developed specifically for nematode and other insect control.
Root-knot and foliar nematodes were the most sensitive and were completely eradicated after steaming at 111 degrees Fahrenheit for four hours.

An important object of the ICZN is to provide Uniqueness to scientific names, Stability to scientific names and Distinctiveness to scientific names.
The ICZN provides and regulates a uniform system of zoological nomenclature ensuring that every animal has a unique and universally accepted scientific name. The maintenance of international standards in animal nomenclature is the unique role of the Commission.

A. Citrus greening ⇔ Psyllid
Citrus greening is spread by a disease-infected insect, the Asian citrus psyllid (Diaphorina citri Kuwayama or ACP), and has put the future of America's citrus at risk.
B. Citrus tristeza virus ⇔ Citrus aphid
Citrus tristeza virus (CTV) is transmitted by several aphid species in a semi-persistent manner with Toxoptera citricida, the brown citrus aphid (BrCA), being the most efficient.
C. Pine apple root wilt ⇔ Mealy bug
Pineapple wilt appears to be influenced by age of the plants: young plants develop symptoms in 2 - 3 months; older plants take up to a year. The disease is associated with the mealybugs.
D. Groundnut rosette virus ⇔ Butterflies. It is not ccorrectly matched as butterfly is not vector of this virus.
Groundnut rosette virus (GRV) is a peanut pathogenic virus found in Sub-Saharan Africa. It is transmitted between plants by insect vectors such as the groundnut aphid (Aphis craccivora).