agriculture MCQs – Page 194

Practise multiple-choice questions from agriculture for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

agriculture Mcqs

1. soil science 2. agronomy 3. entomology 4. water management 5. horticulture 6. agricultural economics 7. plant pathology 8. food technology 9. animal husbandry 10. plant breeding and genetics

3861. Lac is produced by insect_________________?
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A. Bombyx mori

B. Apis cerana

C. Apis dorsata

D. Laceifera lacca

3862. Death of an insect from a single dose is called__________________?
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A. Chronic poisoning

B. Defoliant

C. Bait

D. Acute poisoning

3863. Parthenogenetic reproduction in which both male and female offspring are produced from unfertilized eggs:
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A. None of the above

B. Amphitoky

C. Ambulacrum

D. Anholocyclic

3864. Types of pheromone which motivate the insects to follow each other is known as____________________?
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A. Sex pheromone

B. Alarm pheromone

C. Aggregation pheromone

D. Trial marking pheromone

3865. Commercial production of lac through lac insects is called___________________?
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A. Sericulture

B. Floriculture

C. Apiculture

D. Lac culture

3866. Fire flies are________________?
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A. Beetles

B. Flies

C. Wasps

D. Fleas

3867. Some insects which are used as bio control agents for used control is called________________?
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A. Entomophagous parasites

B. None of the Above

C. Zoophagous parasites

D. Phytophagous parasites

3868. A mixture of active and inert ingredients is called_________________?
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A. Inert ingredient

B. Formulation

C. Active ingredient

D. Dose

3869. The ingredient of pesticide formulation responsible for toxic effect is called_________________?
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A. Insert ingredient

B. Active ingredient

C. Pesticide

D. Dose

3870. A dose of a toxicant that kills 50% of the exposed organism is called_________________?
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A. LC<sub>50</sub>

B. LD50

C. LD<sub>75</sub>

D. None of the Above

3871. Which insect have bacteria and in their digestive system_______________?
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A. Silver fish

B. None

C. Termites

D. Ants

3872. Insect that parasitic other insects are called_________________?
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A. non of theses

B. Zoophagous parasites

C. Entomophagous parasites

D. Phytophagous parasites

3873. Cypermethrin, deltamerthrin, permethrin are example of__________________?
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A. Organophosphrous

B. Organochlorine

C. Carbamate

D. Pyrethroids

3874. A substance used in a pesticide, it helps the spray material to adhere to the sprayed surface is called_________________?
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A. Agitation

B. Adhesive

C. Adjuvant

D. Activator

3875. Main kind of insect pests are___________________?
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A. Major pest & Minor pest

B. Migrant pest & potential pest

C. both A & B

D. None of the above

3876. Those insects which lives in groups, clones or tribes form are called__________________?
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A. Household insects

B. Gregarious insects

C. Social insects

D. Solitary insects

3877. The amount of pest induced injury to the crop which will justify the cost of artificial control measures is called________________?
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A. None of the Above

B. Economic damage

C. Economic injury level

D. Economic threshold

3878. All the practices used to control the pest population with in certain limit are called_________________?
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A. Artificial control

B. Chemical control

C. Cultural control

D. Natural control

3879. Jassid, Aphid and bugs have________________?
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A. Piecing sucking type

B. Siphoning type

C. Rasping

D. Sponging type

3880. Hymenoptera are almost_______ long.
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A. 0.03 mm

B. 0.3 mm

C. 0.02 mm

D. 0.2 mm

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