এন্টোমোলজি

• ০০। 11-Hexudecenal is sex pheromone of:
• ক) Heliothis armigera
• খ) Spodoptera litura
• গ) Trichoplusia nigra
• ঘ) None of the above

• ০১। 7-Dodecenyl acetate is sex pheromone of:
• ক) Dacus cucurbitae
• খ) Heliothis armigera
• গ) Dacus dorsalis
• ঘ) None of the above

• ০২। A better of pest management depends upon:
• ক) The use of resistant variety
• খ) Interlacing the known control methods
• গ) Proper agronomic practices
• ঘ) Use of pesticides

• ০৩। A minimum period of _______ years is to be given before assessing the effectiveness of an important bio-control agent:
• ক) 2
• খ) 3
• গ) 4
• ঘ) 5

• ০৪। A notorious weed, Lantana camara is controlled by:
• ক) Lantana bug
• খ) Shoot fly
• গ) Cochnial insect
• ঘ) None of them

• ০৫। A typical 'Hopper burn' in rice is caused by feeding of:
• ক) Aphids
• খ) Gundhi bug
• গ) Brown plant hopper
• ঘ) Mites

• ০৬। Acricide is:
• ক) Pirmicarb
• খ) Dicofol
• গ) Profenfos
• ঘ) Sevidol

• ০৭। Alternaria blight in mustard can be controlled by:
• ক) Treating seed with hot water
• খ) Soil treatment with alderin
• গ) Bordeaux mixture
• ঘ) None of these

• ০৮। Alxillary sclerites are absent in:
• ক) Lepidoptera
• খ) Coleoptera
• গ) Odonata
• ঘ) Distyoptera

• ০৯। Ammonium carbamate is mixed with alumnium phosphide because:
• ক) It releases ammonia gas alarming the operator
• খ) It releases CO2 which is fire extinguisher
• গ) It gives cooling effect
• ঘ) All of the above

• ১০। Amongst the following insects which one is monophagous?
• ক) Spodoptera litura
• খ) Spilosoma oblicua
• গ) Bombyx mori
• ঘ) Bemicia tabaci

• ১১। Aphelinus mali has been a successful parasite in controlling:
• ক) Tobacco caterpiller
• খ) Apple wolly aphis
• গ) Maize stem borer
• ঘ) Sugarcane top borer

• ১২। Archnids and insects contain malpighian tubules as organs of:
• ক) Respiration
• খ) Excretion
• গ) Digestion
• ঘ) Secretion

• ১৩। Bacillus thurigiensis was reported by Berliner from:
• ক) Tribolium
• খ) Heliothis
• গ) Ephestia
• ঘ) Spodoptera

• ১৪। Bacillus thuringiensis is most effective at pH:
• ক) 3 to 6
• খ) 9 to 10
• গ) 11 to 14
• ঘ) All of the above

• ১৫। Basic unit of classification is known:
• ক) Species
• খ) Genus
• গ) Family
• ঘ) Order

• ১৬। Berlese's theory was proposed to explain the orign of:
• ক) Egg stage
• খ) Larval stage
• গ) Pupal stage
• ঘ) Abdult stage

• ১৭। Bio-types of brown plant hopper are of:
• ক) 2 types
• খ) 3 types
• গ) 4 types
• ঘ) 5 types

• ১৮। Black scale insect of citrus is controlled by:
• ক) Metaphycus loundsbury
• খ) Rodolia cardinalis
• গ) Both of them
• ঘ) None of them

• ১৯। Blood-porphyrinuria is due to accumulation of porphyrin in the :
• ক) Prothoracic glands
• খ) Labial glands
• গ) Salivary glands
• ঘ) Lachrymal glands