Agricultural Entomology - Study Mode

[#256] Mellipedes fall under the following class of Arthropoda
Correct Answer

(B) Myriapoda

Explanation

Solution: Mellipedes fall under the Myriapoda class of Arthropoda. Millipedes are a group of arthropods that are characterized by having two pairs of jointed legs on most body segments, and class Diplopoda. Diplopoda is the largest class of myriapods, an arthropod group that also includes centipedes and other multi-legged creatures. Among myriapods, millipedes have traditionally been considered most closely related to the tiny pauropods, although some molecular studies challenge this relationship.

[#257] Which one of the following is a polyphagous pest?
Correct Answer

(D) Termite

Explanation

Solution: Termite is a polyphagous pest. 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. Males (drones) are haploid and develop from unfertilized eggs, while females (both workers and the queen) are diploid and develop from fertilized eggs. Termites are polyphagous pests causing economic losses to a large number of crops worldwide.

[#258] Mostly predacious insects have following type of head
Correct Answer

(B) Prognathous

Explanation

Solution: Mostly predacious insects have Prognathous type of head. Prognathous type of head refers to the long axis of the head that is horizontal and in line with the long axis of the insect's body. In dragonflies and mayflies, the mouthparts are oriented downwards concerning the cephalocaudal axis (orthognathous), whereas earwigs and stoneflies have prognathous (forward projecting) mouthparts.

[#259] White grub belong to the order
Correct Answer

(A) Coleoptera

Explanation

Solution: White grub belongs to the order Coleoptera. The white grubs have been defined as larvae of Melolonthidae (Wolcott, 1933) they belong to the order Coleoptera, Superfamily Scarabaeidae. The Scarabaeidae have three families viz. Scarabaeidae Passalidae and Lucanidae. White grubs are the larval or grub stage of several species of beetles and chafers. The two most troublesome species in New Hampshire are the European chafer (Rhizotrogus majalis) and the Japanese beetle (Popillia japonica). These beetle larvae are usually C-shaped and can be found feeding among grass roots.

[#260] Exorista sorbillans belongs to the family
Correct Answer

(C) Tachinidae

Explanation

Solution: Exorista sorbillans belong to the family Tachinidae. Exorista sorbillans, the uzi fly, is a species of bristly fly in the family Tachinidae that is a parasitoid of caterpillars and is a problem for silkworm rearing in tropical regions of South and Southeast Asia. The species found in India, Exorista bombycis is sometimes synonymised with this species but is distinct from specimens obtained from the type locality, the Canary Islands.