Agricultural Entomology MCQ Question and Answer | Agriculture MCQ Question

Hologastran abdomen is present in Cantharidae.
The soldier beetles (Cantharidae) are relatively soft-bodied, straight-sided beetles. They are cosmopolitan in distribution.
Soldier beetles often feed on both nectar and pollen as well as predating other small insects. The larvae are often active, velvety, often brightly-colored, and they feed on the ground, hunting snails and other small creatures.

The intestine in Rhadinaphelenchus genus overlaps oesophageal glands in a long lobe.
The red ring disease of coconuts and African oil palms is caused by the nematode Bursaphelenchus cocophilus. It is also identified in literature with an alternative scientific name Rhadinaphelenchus cocophilus.
Females have a long post-uterine sac and a rounded tail. Males have seven papillae in the tail region, distinct spicules, and bursa shaped like a spade.
Esophageal glands overlap intestine dorsally. Hemizonid is usually present. 3 - 8 annules posterior to excretory pore. Body narrowing abruptly behind vulva.

Aethina tumida is a predator of Honey bees.
The small hive beetle or Aethina tumida can be a destructive pest of honey bee colonies, causing damage to comb, stored honey and pollen.
If a beetle infestation is sufficiently heavy, it may cause bees to abandon their hive. Its presence can also be a marker in the diagnosis of colony collapse disorder for honey bees.

In Diplopoda arthropod class, gonophore is present in 3^rd segment.
Diplopoda is two classes of arthropods. Both classes consist of terrestrial animals with a segmented body and jointed appendages. Chilopoda consists of a single pair of legs per body segment while Diplopoda consists of two pairs of legs per body segment.
The genital openings (gonopores) of both sexes are located on the underside of the third body segment (near the second pair of legs) and may be accompanied in the male by one or two penes which deposit the sperm packets onto the gonopods.

Pilifer is the hearing organ present in Hawk moths.
A pilifer or labral pilifer is part of a hearing organ found on the heads of hawkmoths of the subtribe Choerocampina. This organ detects the high-pitched echolocation sounds of insectivorous bats and enables the moth to elude them.
The labral pilifers and the labial palps form ultrasound-sensitive hearing organs in species of two distantly related hawkmoth subtribes, the Choerocampina and the Acherontiina.

American bollworms are controlled by the release of predator Chrysoperla carnea.
Bollworm larva on boll. The cotton bollworm is a serious pest in the southern cotton growing areas. Cotton bollworm larvae damage bolls and squares. Larvae chew holes into the base of bolls and may hollow out locks.
Chrysoperla carnea, one of the species of common green lacewing, is an insect in the Chrysopidae family. Although the adults feed on nectar, pollen and aphid honeydew, the larvae are active predators and feed on aphids and other small insects. It has been used in the biological control of insect pests on crops.

Nematode species exploited for Cancer Research in Caenorhabditis elegans.
Caenorhabditis elegans is a species of nematode worm and is frequently chosen as a model organism to study human diseases. They count on tumor suppressor genes which makes them an ideal biological model to investigate the underlying mechanisms of mutations that lead to defective cell division and movement in cancer and tumor disease.
It could also be used for studying genetic approaches to understand the aging process, age-related diseases, and mechanisms of longevity, and drug screening for compounds that increase lifespan.

Silkworm males are Homogametic.
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.
Yoshimaro Tanaka discovered that B. mori females are heterogametic (WZ), whereas B. mori males are homogametic.
The term homogametic is often used to define an organism or individual producing all the gametes of the same type. The homogametic individuals possess matching pairs of sex chromosomes in contrast to heterogametic individuals who carry sex chromosomes of different types.

Psocoptera insect order is known as 'Corrodentia'.
Psocoptera are a paraphyletic group of insects belonging to the order corrodentia that are commonly known as booklice, barklice, or barkflies.
These are small, scavenging insects with a relatively generalized body plan. They feed primarily on fungi, algae, lichen, and organic detritus in nature but are also known to feed on starch-based household items like grains, wallpaper glue and book bindings.