Agricultural Entomology MCQ Question and Answer | Agriculture MCQ Question

In honey bees, the queen substance is secreted by Mandibular glands.
Mandibular glands, found in many insects, function as the main salivary glands in Lepidoptera larvae. A common function of mandibular glands in social Hymenoptera is to produce pheromones such as alarm pheromones in ants and honey bees, and the queen substance in queen honey bees.
The queen pheromone is produced by the queen's mandibular glands and its five known components are 9-oxo-(E)-2-decenoic acid, (+)- and (−)-9-hydroxy (E)-2-decenoic acid, methyl p-hydroxybenzoate, and 4-hydroxy-3-methoxyphenylethanol.

Contarinia sorghicola is the ear head midge.
Ear head midge in sorghum is adults are tiny, fragile-looking, reddish-orange flies about $$\frac{1}{8}$$ to $$\frac{1}{{16}}$$ inches long, smaller than a fruit fly. Midge larvae play an important role in the ecosystem by helping to break down leaves and other organic material at the bottom of these watery areas.
Each midge can lay 50 eggs and does a remarkable job of spreading them around to 50 different sorghum flowers (florets) during her one-day lifespan.

Butterflies have siphoning type mouthparts which are specially adapted for sucking nectar from flowers.

The main organ involved is a long, coiled structure called the proboscis, which acts like a straw to draw up liquid food.

These mouthparts do not bite, pierce, or lap — they are specifically designed for siphoning fluids.

This adaptation helps butterflies feed efficiently on nectar while minimizing damage to the flowers.

Therefore, the correct answer is Option D: Siphoning type.

The noctuid borer on ragi is Sesamia inferens.
Sesamia inferens, the Asiatic pink stem borer, gramineous stem borer, pink borer, pink rice borer, pink rice stem borer, pink stem borer, purple borer, purple stem borer or purplish stem borer, is a moth of the family Noctuidae. The species was first described by Francis Walker in 1856.
Its wingspan is about 28 mm. Hindwings with veins 3 and 4 arise from the cell. Antennae of male ciliated and simple in female.

The entomopathogenic microbial agent which doesn't require registration under Insecticide Act is Nematode.
The Insecticides Act, of 1968 is an Act to regulate the import, manufacture, sale, transport, distribution and use of insecticides to prevent risk to human beings or animals, and for matters connected therewith.
Entomopathogenic nematodes (EPNs) of the families Heterorhabditidae and Steinernematidae are obligate parasites of insects and are used as biological control agents of economically important insect pests. However, no registered product is available in the market to date, thus it is out of the insecticide act.

Vitamins absent in the insect body system are D and K.
Most insects derive their B vitamin requirements from the diet, microbial symbionts, or a combination of these complementary sources. Exceptionally, the genomes of a few insects bear genes in vitamin B5 (pantothenate) and B7 (biotin) synthesis, horizontally acquired from bacteria.
But they lack vitamin D and K in their bodies.

In plant parasitic Tylenchids, the median valve is present within Metacorpus.
An order of nematodes in which the labial region is variable and may be distinctly set off or smoothly rounded and well developed; the hexaradiate symmetry is most often retained or discernible. The amphids are porelike, oval, slitlike, or clefts located on the lips.
The swollen posterior part of the corpus in the pharynx of a nematode is known as metacorpus. In this median valve is present.

Termite is belong to order Isoptera.
Termites are a group of detritophagous eusocial insects which consume a wide variety of decaying plant material, generally in the form of wood, leaf litter, and soil humus. They are easily identified by the typically soft-bodied and unpigmented worker caste for which they have been colloquially termed "white ants".
Termites comprise the infraorder Isoptera. The infraorder name Isoptera is derived from the Greek words iso (equal) and ptera (winged), which refers to the nearly equal size of the fore and hind wings.

Celphos tablets are used for the management of Storage pests.
Celphos is a trusted fumigant used for controlling stored product insect pests in various commodities. Celphos is highly effective, economical and easy to use fumigant worldwide.
Funigant Powder For Control Of Stored Grain Pests.

A smoky membranous wing with R thickened is found in Embioptera.
The order Embioptera, commonly known as webspinners or footspinners, is a small group of mostly tropical and subtropical insects, classified under the subclass Pterygota.
The name Embioptera ("lively wings") comes from Greek (embios), meaning "lively", and (pteron), meaning "wing", name that has not been considered to be particularly descriptive for this group of fliers, perhaps instead referring to their remarkable speed of movement both forward and backward.
The wings have a crosswise crease, allowing them to fold forwards and enabling the male to dart backwards without the wings snagging the fabric.