General Agriculture MCQ For Competitive exam-55

General Agriculture MCQ

#Stridulation is a method of producing sound by:

a. Vibrating the wings

b. Vibrating a resonant membrane

c. Striking the substrate

d. Rubbing body parts together

#Which event might initiate nocturnal behavior in an insect whose activity cycle is under exogenous control?

a. Sunrise

b. Solar eclipse

c. Rainfall

d. None of these

#Which communication signal has low information content, but can be long-lasting in the environment?

a. Wing color patterns

b. Light flashes

c. Stridulation

d. Marking pheromones

#The sterile-male technique works best when:

a. The target population is large.

b. Females mate repeatedly.

c. The pest species can be mass-reared.

d. All of these.

#If the acute dermal LD-50 of an insect is 50 mg/kg, then:

a. 50 insects can be killed with 50 mg of the product.

b. One insect can be killed with 50 mg of the product.

c. 50% of the insects can be killed with 50 mg of the product.

d. None of these

(General Agriculture MCQ )

#Anaphylactic shock is best described as an extreme type of:

a. Entomophibia

b. Allergic reaction

c. Parasitosis

d. Envenomization

# Vibrio cholerae, the causal agent of cholera, can be carried from one place to another on the feet of flies. This is an example of which type of transmission?

a. Obligatory

b. Mechanical

c. Transovarial

d. Facultative

#Compared to first generation pesticides, the newer second and third generation compounds are:

a. More selective and less persistent.

b. More toxic and less selective.

c. More persistent and less selective.

d. None of these.

# What is the generally accepted mode of action for organophosphate insecticides?

a. Chitin inhibitor

b. Cholinesterase inhibitor

c. Stomach poison

d. Respiratory toxin

#Which of these denotes a type of host plant resistance characterized by the ability of the plant to outgrow and/or repair damage resulting from an insect attack?

a. Antibiosi

b. Symbiosis

c. Antixenosis

d. Tolerance

(General Agriculture MCQ )

#Which of these is a cultural method for controlling insects?

a. Crop rotation

b. Window screens

c. Quarantine

d. Sex pheromone traps

#Which class of chemical insecticides is characterized by a relatively high degree of environmental persistence?

a. Carbamates

b. Synthetic pyrethroids

c. Organophosphates

d. Chlorinated hydrocarbons

#Which sampling strategy is best suited for insects that live in the soil?

a. Sex pheromone trap

b. Sweeping

c. Berlese funnel

d. Light trap

#Which common name is incorrectly written?

a. Horsefly

b. Honey bee

c. Ground beetle

d. Lightningbug

#As human consumers become less tolerant of insect damage on fruit, the economic thresholds for fruit pests are likely to:

a. Increase

b. Remain the same

c. Decrease

d. No way to tell

(General Agriculture MCQ )

#Which of these is NOT considered an insect growth regulator?

a. Synthetic pyrethroid

b. Juvenile hormone analogue

c. Chitin inhibitor

d. Ecdysteroid

#Organophosphate and carbamate insecticides work by disrupting an insect’s:

a. Digestive system

b. Nervous system

c. Respiratory system

d. Endocrine system

# The sterile-male technique would probably not work well for an insect pest whose:

a. Population is extremely abundant.

b. Individuals are easily mass reared.

c. Females mate only once in their lifetime.

d. Males are very strong fliers.

#Which of these is an “unbiased” sampling strategy?

a. Malaise trap

b. Light trap

c. Sticky trap

d. None of these

#Breeding nursey stock for higher levels of secondary plant compounds would be an example of:

a. Antixenosis

b. Xenobiosis

c. Antibiosis

d. Tolerance

(General Agriculture MCQ )
#Which of these is likely to be regarded as the most “useful” biological control agent?

a. A beetle that feeds on kudzu.

b. A parasite of lady beetles.

c. A predator of robber flies.

d. A viral pathogen of lacewings.

#To which of these groups do insect pathogens belong?

a. Viruses and bacteria

b. Protozoa and fungi

c. Bacteria and protozoa

d. All of these

#Pest outbreaks tend to occur when:

a. Crops are planted in monoculture.

b. Natural enemies are imported from abroad.

c. Farmers switch to new crops.

d. All of these.

#Biological control is likely to be most effective when the predator or parasite has a(n)

a. Long life cycle

b. Wide range of preferred hosts

c. High reproductive rate

d. All of these

#Which insect orders contain species that are important pests of domestic animals?

a. Siphonaptera and Coleoptera

b. Orthoptera and Hemiptera

c. Diptera and Phthiraptera

d. All of these

(General Agriculture MCQ )

#Which control strategy is likely to have the greatest impact on non-target organisms? control?

a. Chemical control

b. Cultural control

c. Biological control

d. Physical/mechanical control

#The pedicel is the name for the:

a. 1st leg segment

b. 1st antennal segment

c. 2nd leg segment

d. 2nd antennal segment

#Which hormone would NOT be found in adult insects?

a. Brain hormone (PTTH)

b. Juvenile hormone

c. Eclosion hormone

d. All of these

# Aquatic immatures of All holometabolous insects are known as:

a. Nymphs

b. Larvae

c. Naiads

d. Young

(General Agriculture MCQ )

#Suppose you find an interesting arthropod living on the bottom of a fresh water pond. It has eyes, antennae, mandibles, and 10 pairs of legs. You conclude that this organism belongs in the class:

a. Insecta

b. Crustacea

c. Diplopoda

d. Arachnida

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