Agricultural Entomology MCQ Question and Answer | Agriculture MCQ Question

The ladder shaped scrapping on the rice leaves is due to Dicladispa armigera.
Damage is caused by the adults and larvae of the rice hispa, Dicladispa armigera. Adult beetles scrape the upper surface of leaf blades leaving only the lower layer.
Eggs are laid inside minute openings on the tender leaves, generally toward the tip. The grub is whitish-yellow and flattened.

Linker of Apterygotes and pterygotes is Thysanura.
Thysanura is the now deprecated name of what was, for over a century, recognised as an order in the class Insecta. Another name used to separate the two groups from winged insects is Apterygota.
Apterygota and pterygota are two subclasses of insects. Apterygota is a subclass of insects that includes wingless insects, while pterygota is a subclass of insects that includes winged insects.

Aphids and white flies are effectively controlled by Systemic insecticide.
A Systemic fungicide is taken up by a plant and is then translocated within the plant system, it can there by protect the plant from infections and restrict/Control the further growth of existing infungal infections.
The soil-applied systemic insecticide imidacloprid can control whitefly nymphs.

The national animal of India is Panthera tigris.
The magnificent tiger, Panthera tigris is a striped animal. It has a thick yellow coat of fur with dark stripes. The combination of grace, strength, agility, and enormous power has earned the tiger its pride in place as the national animal of India.
The Bengal Tiger was declared the National Animal of India in April 1973, with the initiation of Project Tiger, to protect the tigers in India.

The infested region on the bark turns pink colour and pink colour encrustation on apple fruits are tile characteristic damage symptoms of San Jose Scale (Quadraspidiotus perniciosus).
The San Jose scale (Quadraspidiotus perniciosus) is a hemipterous insect in the family of Diaspididae. It is an agricultural pest as it causes damage and crop losses to many fruit crops.
The body of the adult female is yellow and is covered with a rounded dark gray scale up to two millimetres in diameter.
This species is found in both temperate and subtropical climates. It infests about two hundred different species of host plants, mostly deciduous trees and bushes. It is found on the trunks, branches, twigs, leaves and fruits of the plant.

In termites trail pheromone is produced from Sternal Glands.
In termites, the sternal glands are known to secrete trail-following pheromones in neuter castes and sex-pheromone in some adults.
The sternal gland discharges pheromones when it presses against a substance. There is a chemical in ballpoint pen ink that is similar in composition to the trail-following pheromones, called 2-phenoxyethanol.

Pink boll worm is a serious pest of Cotton.
Pink bollworm is a major pest of cotton in southern California deserts. While established in the San Joaquin Valley, economic infestations have not occurred in this area.
Adults are small, grayish brown, inconspicuous moths. When their wings are folded, they have an elongated slender appearance.

Piercing and sucking types of mouth parts are found in Mustard aphids.
These types of mouth parts are suitable for piercing the skin of animals or plants and sucking blood or fluid. They are found in mosquitoes, sand flies, biting midges, bugs and lice.
In mosquitoes and sand flies, all pieces of mouth parts are narrow and elongated to form a proboscis.

Skeletimization of tobacco leaves is caused by Tobacco caterpillars (Spodoptera litura).
Skeletonization is the state of a dead organism after undergoing decomposition. Skeletonization refers to the final stage of decomposition, during which the last vestiges of the soft tissues of a corpse or carcass have decayed or dried to the point that the skeleton is exposed.
The tobacco caterpillar, Spodoptera litura (F.) (Lepidoptera: Noctuidae) is considered the most destructive insect pest of castor damaging the crop throughout the Kharif season. The newly hatched larvae feed gregariously and skeletonise the leaves giving 'mesh-like appearance.

Antennae is absent in Protura.
Proturans lack antennae and possess 12 abdominal segments (instead of the typical 11), 3 of which are added postembryonically in successive nymphal molts, or sheddings of skin (anamorphosis).
Proturans thrust their forelegs forward and use them as sensory organs. The front legs carried like antennae, serve a sensory function.