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.Management Sciences
Category: Entomology
Best example of predators are____________________?
0
A. Dragon flies, Aphid lions,
B. Trichograma species
C. Lady beetle, flower beetle
D. Dragonflies, Aphid lions, Lady bird beetle, flower beetle
Juvenile hormone ensures_______________?
A. Causes moulting
B. Larval organism is to be made after moulting
C. Maintains immature forms during larval moults
D. 2nd and 3rd both
Chemicals, which transmit the chemical message, to individual of various species_________________?
A. Semio chemicals
B. Allelo chemicals
C. Primers
D. Releasers
Reduction in pest population by the utilization of agricultural practices to make the environment unfavorable for pest is called__________________?
A. Natural control
B. Mechanical control
C. Physical control
D. Cultural control
In honey bees a flight for mating purpose is called_________________?
A. Nuptial flight
B. Straight flight
C. Tactile flight
D. None of above
Types of pheromone which motivate the insects to follow each other is known as____________________?
A. Alarm pheromone
B. Aggregation pheromone
C. Sex pheromone
D. Trial marking pheromone
Honey bees with a row of minutes hooks on the anterior wings that catch in to the up-rolled hind border of the fore wing is_______________?
A. Frenulum
B. Jugum
C. Retainaculum
D. hamuli
When some cultivars are resistance and some cultivars are susceptible, when they are infested with same insect biotype such type of resistance is called___________________?
A. General resistance
B. Specific resistance
C. Cross resistance
D. Horizontal resistance
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