Crushing of food in insects is done by:
A.Rectal papilla
B.Green cells
C.Proventriculus
D.Crop
Category: Agriculture Entomology Mcqs
Bio-types of brown plant hopper are of:
A.2 types
B.3 types
C.4 types
D.5 types
A typical ‘Hopper burn’ in rice is caused by feeding of:
A.Aphids
B.Gundhi bug
C.Brown plant hopper
D.Mites
Blood-porphyrinuria is due to accumulation of porphyrin in the :
A.Prothoracic glands
B.Labial glands
C.Salivary glands
D.Lachrymal glands
In the reduction of a pest population, the balance of the natural enemies is maintained in:
A.Pest management
B.Pest control
C.Pest eradication
D.None of these
Inorganic salts are toxic to insects by:
A.Contact
B.Ingestion
C.Both of the above
D.Inhalation
11-Hexudecenal is sex pheromone of:
A.Heliothis armigera
B.Spodoptera litura
C.Trichoplusia nigra
D.None of the above
In aphids cornnicals are projected from the forsum of:
A.5th abdominal segment
B.6th abdominal segment
C.7th abdominal segment
D.8th abdominal segment
If equilibrium population level of a crop damaging insect is above the economic injury level, it is a:
A.Potential pest
B.Not a pest
C.Sporadic pest
D.Regular pest
Whorl application of granulr insecticide provides effective control measure against:
A.Spotted bollworm
B.Maize stem borer
C.Stem borer paddy
D.Mango stem borer
