General Agriculture MCQ For Competitive exam-58

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General Agriculture MCQ

# Which of the following responses occur when predators interact with prey populations?

a. A numerical response.

b. A functional response.

c. A lag effect.

d. a., b. and c..

e. a. and b. only.

# An example of a biological control against insects is the use of

a. Herbicides

b. Wildlife refuges

c. Pesticides

d. Sex hormones

# 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

#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

(General Agriculture MCQ)

#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

# 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

(General Agriculture MCQ)

# 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:

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

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

a. Chemical control

b. Cultural control

c. Biological control

d. Physical/mechanical control

(General Agriculture MCQ)

#Which insect order is most closely related to Diptera?

a. Hymenoptera

b. Orthoptera

c. Plecoptera

d. Thysanura

# To which class of arthropods do lobsters and shrimp belong?

a. Crustacea

b. Arachnida

c. Myriapoda

d. Xiphosura

#The order Hemiptera contains:

a. Bed bugs and stink bugs

b. Chewing and sucking lice

c. Roaches and mantids

d. Crickets and grasshoppers

#Which order is not holometabolous?

a. Siphonaptera

b. Hymenoptera

c. Thysanoptera

d. Neuroptera

#Which order is exclusively herbivorous?

a. Trichoptera

b. Odonata

c. Phasmatodea

d. Thysanoptera

(General Agriculture MCQ)

#Which order is exclusively parasitic?

a. Diplura

b. Phthiraptera

c. Zoraptera

d. Diptera

# Sucking mouthparts are NOT found in:

a. Fleas

b. Lice

c. Flies

d. Ants

#All ametabolous insects are:

a. Predatory

b. Wingless

c. Endognathous

d. All of these

# Immatures of the Neuroptera would be classified as:

a. Scavengers

b. Parasites

c. Herbivores

d. Predators

#What do the orders Mantodea, Dermaptera, and Isoptera have in common?

a. Winglessness

b. Chewing mouthparts

c. Herbivory

d. All of these

#Which insect order is most closely related to Dermaptera?

a. Hymenoptera

b. Orthoptera

c. Plecoptera

d. Thysanura

(General Agriculture MCQ)

#Which arthropods have chelicerae?

a. Spiders

b. Millipedes

c. Shrimp

d. All of these

# The order Orthoptera contains:

a. Bed bugs and stink bugs

b. Chewing and sucking lice

c. Roaches and mantids

d. Crickets and grasshoppers

#Which characteristic would not be found in the Onychophora?

a. One pair of antennae

b. Three tagmata

c. Jointed legs with claws

d. Segmented body

#Which order is exclusively hematophagous (blood feeders)?

a. Siphonaptera

b. Thysanoptera

c. Phasmida

d. Hymenoptera

(General Agriculture MCQ)

#Which structure is always associated with the Hymenoptera?

a. Furcula

b. Hamuli

c. Collophore

d. Elytra

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