Agricultural Entomology - Study Mode
[#506] Pheromone trap attracts
Correct Answer
(D) None of these
Explanation
Solution: The pheromone trap attracts neither female bugs, caterpillars, or female moths. A pheromone trap is a type of insect trap that uses pheromones to lure insects. Pheromone traps are used both to count insect populations by sampling and to trap pests such as clothes moths to destroy them. Pheromone traps are very sensitive, meaning they attract insects present at very low densities. They are often used to detect the presence of exotic pests, for sampling, monitoring, or to determine the first appearance of a pest in an area.
[#507] Bad odour feeding symptom in flour is due to
Correct Answer
(B) Cockroach
Explanation
Solution: Bad odour feeding symptom in flour is due to Cockroach. Heavy infestation causes a stinking odour in flour, adversely affecting the dough quality. It is an important pest for mill machinery. The flour attracts the roaches.
[#508] The last segment in the abdomen of male cockroach in addition of cerci will have a pair of
Correct Answer
(B) Anal styles
Explanation
Solution: The last segment in the abdomen of the male cockroach in addition to cerci will have a pair of Anal styles. The body is divided into a thorax of three segments and a ten-segmented abdomen. The abdomen has ten segments, each having a pair of spiracles for respiration. In addition to the spiracles, the final segment consists of a pair of cerci, a pair of anal styles, the anus and the external genitalia.
[#509] Shoot fly belong to the family
Correct Answer
(A) Anthomyidae
Explanation
Solution: Shoot flies belong to the family Anthomyidae. The Anthomyiidae are a large and diverse family of Muscoidea flies. Most look rather like small houseflies but are commonly drab grey. Shoot fly has emerged as an important and regular pest of wheat crops since the adoption of semi-dwarf varieties. The fly is about about 3 mm in body length and dark grey. The newly hatched maggots creep into the leaf sheaths of the tillers and cut the central growing shoots causing dead hearts. In case of severe infestation the plant assumes a bushy appearance with a large number of tillers.
[#510] Oil beetles belong to the family
Correct Answer
(C) Meloidae
Explanation
Solution: Oil beetles belong to the family Meloidae. Meloidae is the family of beetles, so called for their defensive secretion of a blistering agent, cantharidin. About 7,500 species are known worldwide. Oil beetles are a precious and declining group of five beetles that live in calcareous grasslands, dunes, heaths and woodlands. They are a member of the wider 'blister beetle' family, Meloidae. They are so-called because they squirt irritating oily droplets from their joints when alarmed.