Entomology Questions and Answers

1. The book ‘Principles of Insect Morphology’ was written by :-
A. R.F. Chapman
B. R.E. Snodgrass
C. V.B. Awasthi
D. R.C. Saxena

2. The hypopharynx separates the mouth opening from the :-
A. Cibarium
B. Labrum
C. Mandibles
D. Silivarium

3. Which structure could be found in both male and female ?
A. Valvifer
B. Aedeagus
C. Epiproct
D. Clasper

4. Which part of the leg lies between the femur and tarsus ?
A. Coxa
B. Arolium
C. Tibia
D. Trochanter

5. The First president of Entomological society of Indian was :-
A. H.S. Pruthi
B. Ramkrishan Ayyar
C. Afzal Hussain
D. Ramchandra Rao

6. Axillary sclerites form points of attachment for muscles that control the :-
A. Antennae
B. Wings
C. Legs
D. Mouth parts

7. The book “Introductory Insect Physiology” was written by :-
A. Sir V.B. Wigglesworth
B. R.L. Patton
C. Paul D. Bach
D. Y.J.A. Novak

8. Which of the following enters the kreb’s cycle :-
A. Malate
B. Acetyl Co A
C. Oxaloacetate
D. None of these

9. In which of the following insect the spiracle are absent :-
A. Cecidomyid larvae
B. Chironomid larvae
C. Mycetophilid larvae
D. Pyscodid

10. 11 – Hexudecemal is a sex pheromon of :-
A. Helicoverpa armigera
B. Spodoptera litura
C. Trichoplusia ni
D. Bombyx mori

11. Insect haemolymph consists of following sinuses, choose the odd one :-
A. Pericardial sinus
B. Perivisceral sinus
C. Peritracheal sinus
D. Perineural sinus

12. The origin of ovaries and testes of grasshopper is :-
A. Ectodermal
B. Endodermal
C. Mesodermal
D. None of these

13. The process by which air is brought into tracheal system and circulated throughout the body is known as :-
A. Oxidation
B. Ventilation
C. Plastron respiration
D. Pneumatization

14. Which of the following is the smallest order of class insecta :-
A. Hemiptera
B. Odonata
C. Lepidoptera
D. Zeroptera

15. In Hymenoptera the first abdominal segment, which is fused with the metathorax, is called :-
A. Cornicle
B. Epiproct
C. Scutellum
D. Propodeum

16. The Zoological ‘Validity of names’ is dealt within :-
A. Chapter VI
B. Chapter VII
C. Chapter VIII
D. Chapter IX

17. Ecotype is a type of species in which environmentally induced variation are :-
A. Temporary
B. Genetically fixed
C. Genetically not related
D. None of these

18. Liebig’s law or law of the minimum is a principle developed in agriculture science was described by :-
A. Carl Linnaeus (1736)
B. J.C. Fabricius (1775)
C. Carl Sprengel (1828)
D. H.S. Lefroy (1908)

19. The term ‘Ecosystem’ was proposed by :-
A. Hannis Reiter
B. A.G. Transley
C. E.P. Odum
D. Mayer

20. The fumigant Durafume is a mixture of EDB and methyl bromide in the ratio of :-
A. 1:1
B. 2:1
C. 3:1
D. 3:2

Practice Papers for Agriculture Students

Plant Pathology Test Papers
Entomology Important Questions
Agriculture Chemistry Question Bank
Agronomy Practice Set
Agri Botany Questions and Answers
Quiz Mock Test
MCQ Sample Question
Selected Questions Model Papers

21. A chemical beneficial to both releaser and receiver is called :-
A. Kairomone
B. Allomone
C. Pheromone
D. Synomone

22. Nereistoxin is isolated from the body of marine annelids by :-
A. Dr. Remobold (1983)
B. Dr. Nitta (1934)
C. Dr. Ruscoe (1972)
D. Dr. Williams (1956)

23. If one gram of a insecticide formulation containing 50% ingredient is mixed with 1 litre of water. What will be the ingredient in the spray fluid ?
A. 5 ppm
B. 50 ppm
C. 500 ppm
D. 5000 ppm

24. The first edition of “Systema Naturae” was published in the year :-
A. 1725
B. 1735
C. 1745
D. 1755

25. In general weedicides are sprayed by using :-
A. Ring type spray nozzle
B. Disc type spray nozzle
C. Flat fan type spray nozzle
D. None of these

26. Eco₂ fume is a mixture of :-
A. Phosphine and ethyl bromide
B. Phosphine and Carbon tetrachloride
C. Phosphine and Carbon disulphide
D. Phosphine and carbon oxide

27. The “Destructive Insect and Pest Act 1914″ was passed on :-
A. 3rd February
B. 3rd March
C. 3rd April
D. 3rd May

28. Sabadilla is a mixture of alkaloids :-
A. Cevadine and Veratridine
B. Cevadine and tephrosine
C. Deguelin and Veratridine
D. Toxicarol and deguelin

29. Diflubenzuron is a derivative of :-
A. Dithiophosphoric acid
B. Phosphoric acid
C. Difloro compound
D. Urea

30. Neonicotinoids act on the central nervous system of insects through binding of the :-
A. Synaptic nicotinic acetyl choline receptor
B. Post Synaptic nicotinic acetyl choline receptor
C. Synaptic anticholinesterases
D. Synaptic acetyl choline

31. X-Ray method for detection of internal infestation of insect in grain was described by :-
A. Dennis and Decker
B. Milner et al
C. White et al
D. Howe and Oxley

32. Bubonic plague is transmitted by which of the following insects :-
A. Housefly
B. Fleas
C. Sandfly
D. Mosquito

33. The scientific name of case making cloth moth :-
A. Tinea pellionella
B. Trichophega tapetzella
C. Galleria mellonella
D. Tineola bisselliella

34. The common name of Macrosiphum rosaeiform is :-
A. Cotton aphid
B. Rose aphid
C. Jasmine thrip
D. Kachner Psylla

35. Which of following pests causes damage to the grains at milky stage in Rice :-
A. Leptocorisa acuta
B. Ripersia oryzae
C. Dicladispa armigera
D. Cofana spectra

36. Leaf curl disease of litchi is caused by :-
A. Tetranychid mite
B. Eriophid mite
C. Spider mite
D. Tenuipalpid mite

37. Onion thrips lay eggs :-
A. Round shape
B. Kidney shape
C. Oval shape
D. Boat shape

38. Site of pupation of ber fruitfly :-
A. On leaves
B. Inside fruits
C. In soil
D. on stem

39. Mango stem borer belongs to family :-
A. Papillionidae
B. Cerambycidae
C. Grecillaridae
D. Lyacaenidae

40. The scientific name of Indian Mole Rat :-
A. Rattus rattus
B. Bandicota bengalensis
C. Bandicota indica
D. Tatera indica

41. The concept of ‘Integrated pest management’ was given by Geier and Clark in the year :-
A. 1959
B. 1961
C. 1963
D. 1973

42. The basis of antibiosis in corn against European Corn borer is :-
A. Nutritional deficiency
B. Nutritional imbalance
C. Presence of toxin
D. Presence of growth inhibitor MBOA and DIMBOA

43. The fertilized female of Laccifer lacca lay eggs ranging from :-
A. 0-100
B. 101-200
C. 201-500
D. 501-700

44. Where the nector is converted into honey :-
A. In the alimentary canel of queen
B. In the alimentary canel of worker
C. In royal chamber
D. In special cell of the hive

45. Spinosad is derived from ——
A. Saccharopolyspara spinosa
B. Polyspora spinosa
C. Streptomyces avermitilis
D. Streptomyces spinosa

46. Imms General Textbook of Entomology” 10th edition (1977) is authored by :-
A. O.W. Richards and R.G. Davies
B. A.D. Imms and O.W. Richards
C. O.W. Richards and R.C. Davies
D. O.V. Richards and R.G. Davies

47. In leucerne, resistance to spotted aphid is associated with :-
A. Low sinigrin in leaves
B. High silica contents in leaves
C. High saponin in leaves
D. None of these

48. Which of the following is a genetic vector :-
A. Phasmid
B. Phage
C. Cosmid
D. All of these

49. Pallination by insect is called :-
A. Entomophily
B. Entomophobia
C. Hydrophily
D. Entomophagy

50. Formation of mRNA from DNA is called :-
A. Transformation
B. Transduction
C. Translation
D. Transcription

51. A nuleotide is formed of :-
A. Purine, pyrimidin and phosphate
B. Purine, sugar and phosphate
C. Nitrogen base, sugar and phosphate
D. Pyrimidin, sugar and phosphate

52. Which part of the mouth parts of honey bee used to mould wax and adhere pollen ?
A. Ligula
B. Labium
C. Labrum
D. Labellum

53. European Foulbrood disease of honey bee is caused due to :-
A. Melissococcus plutonius
B. Aspergillus flavus
C. Galleria mellonella
D. Nosema apis

54. Disease of silk worm in which, the integument will be fragile and break easily oozing turbid milky fluid :-
A. Flacherie
B. Grasserie
C. Muscardine
D. Pebrine

55. The gravid rat female live in :-
A. Irregular burrow
B. Round burrow
C. Semi-circular burrow
D. None of these

56. The sexual maturity in immature stage of insect is known as :-
A. Viviparity
B. Parthenogenesis
C. Paedogenesis
D. Polyembryony

57. Berlese’s theory was proposed to explain the origin of :-
A. Egg stage
B. Larval stage
C. Pupal stage
D. Adult stage

58. A universal antidote is a mixture of :-
A. Activated charcoal (2 parts), magnesium oxide (1 part) and tannic
B. Activated charcoal (2 parts), magnesium oxide (2 part) and tannic
C. Activated charcoal (3 parts), magnesium oxide (2 part) and tannic
D. Activated charcoal (2 parts), magnesium oxide (1 part) and tannic

59. The first transformation with deltaendotoxin gene from BT was done in Belgium in the year 1985 in :-
A. Tobacco
B. Paddy
C. Potato
D. Cotton

60. Which one is used for inoculation of host tree for :-
A. Seed lac
B. Phunki lac
C. Brood lac
D. Eri lac

61. The process of post ecdysial hardening and darkening of the cuticle is regulated by :-
A. Moulting hormone
B. Juvenile hormone
C. Brain hormone
D. Bursicon hormone

62. The “Nucleocapsid” is always associated with the structure of insect pathogenic :-
A. Entomopox Viruses
B. Non-occluded viruses
C. Baculo viruses
D. Irido viruses

63. Which of the following is a first systemic organophosphate :-
A. Quinalphos
B. Dimethoate
C. Phorate
D. Schradan

64. what will be the amount of malathion 50 EC required to prepare 100 liter of 0.05% spray material :-
A. 100 ml
B. 500 ml
C. 1000 ml
D. 5000 ml

65. “Bhopal Gas Tragedy” was caused by which gas :-
A. Phosphine
B. Methyl iso-cynate
C. Carbon tetrachloride
D. Chloromethane

66. Which one of the following pairs of diseases is viral as well as transmitted by mosquitoes ?
A. Encephalitis and sleeping sickness
B. Yellow fever and sleeping sickness
C. Elephantiasis and Dengue
D. Yellow fever and Dengue

67. Which of these events occurs first during development of an insect egg ?
A. Differentiation of germ layer
B. Enlargement of the germ band
C. Segregation of the germ cell
D. Migration of the cleavage nuclei

68. Which of the following is larval-pupal paresitoid ?
A. Compoletis chlorideae
B. Apanteles Flavipes
C. Trichogramma minutum
D. Carcelia laxifrons

69. The type of parthenogenesis where only males are produced is :-
A. Amphitoky
B. Thelytoky
C. Arrhenotoky
D. None of these

70. Pheromone released by female beetles of white grut is :-
A. Hexane
B. Benzene
C. Methoxy benzene
D. Ethoxy benzene

71. Widely distributed form of proprioreceptors of chordotonal nature in insect is :-
A. Scolopidia
B. Companiform sensilla
C. Sensilla trichoidea
D. Trichogen hair cell

72. The classic “mosaic theory” of insect vision was propounded by :-
A. V.B. Wigglesworth (1965)
B. Von Frisch (1967)
C. R.L. Patton (1962)
D. J.Muller (1826)

73. Grain-O-Cide is mixture of :-
A. Carbon disulphide and carbon tetrachloride
B. Phosphine and ethyl bromide
C. Phosphine and Carbon disulphide
D. Phosphine and carbon oxide

74. Which of the given ancient Vedic period literature deals with identifying bees, mosquitoes and ants ?
A. Atharva Veda
B. Charaka (1200 BC)
C. Manudharma sastra (1000 BC)
D. None of these

75. The entomological work of Shushmita (100-200 AD) describes :-
A. Distinction between locusts, grasshoppers and thrips
B. Classification of ants, flies and mosquitoes
C. Insect stings, classification of ants, flies and mosquitoes
D. Usage of terms ovipary, vivipary and queen termite

76. Hind tibia with double row spines is a characteristic feature of the family ____ :-
A. Delphacidae
B. Cicadellidae
C. Membracidae
D. Cercopidae

77. The rate of death and expection of life at various time intervals during the life cycle of an insect are indicated by :-
A. Insect population density
B. Natality
C. Life table
D. Survivorship curve

78. The five principle parts of a standard sprayer nozzel in proper sequence are :-
A. Cap>>Disc>>Whirl>>Washer>>Base
B. Base>>Whirl>>Washer>>Disc>>Cap
C. Base>>Washer>>Disc>>Whirl>>Cap
D. Cap>>Washer>>Disc>>Whirl>>Base

79. The mango variety resistant to fruit fly, Bactrocera dorsalis Hendel is :-
A. Alphonso
B. Kesar
C. Langra
D. None of these

80. Installing 10-12 blue/yellow sticky traps per hectare is effective to manage :-
A. Grape thrips
B. Grape flea beetles
C. Pomegranate butterfly
D. Coconut tingid bug

81. In groundnut cultivation mass collection of adults of both sexes from host trees using pheromone in a 15 meter radius and pre-sprayed with an insecticide is effective against ?
A. White grubs
B. Termites
C. Leaf miners
D. Tabacco caterpillar

82. Effective management of the silkworm endoparasitoid (uzi fly) is possible by :-
A. Use of physical barrier like wiregauge net
B. Spray of benzoic acid (1%) to destroy eggs of uzi fly
C. Release of the ecto-pupal gregarious parasitoid Nesolynx thymus
D. All of these

83. Shanon-Weiner function to estimate species diversity is given as :-
A. H’ = Σ ( pi loge pi )
B. H’ = Σ ( loge pi )
C. H’ = pi Σ loge pi
D. None of these

84. Technology that uses enzymes to cut and paste together DNA sequences of interest :-
A. Electrophoresis
B. Nanotechnology
C. Recombinant DNA technology
D. None of these

85. Which one of the following statement is correct ?
A. The prethoralic gland are a pair of diffuse gland at the front of the head
B. The corpora cardiaca store and release hormones from neurosecretory cells
C. Ring gland surrounds the aorta just below the brain.
D. The corpora allota are situated at either side of the pharynx.

86. Which reason is responsible for promise and the threat of ecology that thrust environmental problems into the fore front of man’s thinking :-
A. Atomic energy and Human population explosion
B. Chemical Industry and Air pollution
C. Soil pollution and Automobile Industry
D. Pesticides and Fertilizers

87. Who proposed the theory of “Genetic mechanism for the determination of number to regulate population” ?
A. Pimentel theory (1961)
B. Milne’s theory (1962)
C. Theory of Andrewartha and Birch (1954)
D. Nicholson’s theory (1933)

88. The movement of insecticide towards the surface of the soil alongwith water is called :-
A. Surface residue
B. Disorption phenomenon
C. Penetrated residue
D. Wick – effect

89. Which of the following statement is correct ?
A. Mutagenic agent : It has been established that insecticides are
B. Half life : The rate of disappearance of insecticide deposited.
C. Deposit : The amount of initially laid down insecticidal chemical on the
D. Residue : The amount of insecticide sprayed on the plant

90. which of the following insecticides group is not classified under classification based on mode of action :-
A. Protoplasmic poisons
B. contact poisons
C. Respiratary poisons
D. Nerve poisons

91. Phenyl pyrazoles are a new class of insecticides with a single material called as :-
A. Imidacloprid
B. Fipronil
C. Pyridaben
D. Profenofos

92. In rice storage, fungi are known to produce mycotoxins like afflatoxins by :-
A. Fusarium Moniliforme
B. Beauveria bassiana
C. Metarrhizium anisopliae
D. Nomuraea rileyi

93. Which one of the following statement is correct ?
A. If the environment and social costs of pesticide use are taken into account,
B. The presence of pesticide residues is not affecting our exports of agriculture
C. Modern agriculture can sustain the present productivity levels with the
D. Production, storage, transport, distribution and application of

94. Chemicals which act as a feeding deterrent and growth inhibitor in insect pest but influence the host searching efficiency of predators and parasitoids is called :-
A. Biotypes
B. Synemones
C. Infochemicals
D. Antimones

95. The technique in which high voltage current is applied in a pulsed manner which creates tiny holes in the plant cell membrane is called as :-
A. Direct uptake of DNA
B. Microinjection
C. Microprojectile bombardment
D. Electro poration

96. “International Institute of Biotechnology and Toxicology” is located at :-
A. Hyderabad
B. New Delhi
C. Chennai
D. Bengaluru

97. In insect DDT is metabolized into :-
A. Di chlorobenzophenone
B. Dichloro – diphenyl dichloro ethane
C. Dichloro – diphenyl dichloro ethylene
D. Dichloro – diphenyl acetic acid

98. The Grubs are legless in the family of order Coleoptera ?
A. Chrysomelidae
B. Coccinellidae
C. Curculionidae
D. Carabidae

99. The species of Trichogramma used against yellow stem borer, Scirpophaga incertulus in rice is :-
A. Trichogramma minutum
B. Trichogramma chilonis
C. Trichogramma japonicum
D. Trichogramma brassilensis

100. The correct sequence of host plant selection by insect is :-
A. Host habitat finding – Host finding – Host recognition – Host acceptance
B. Host acceptance – Host finding – Host habitat finding – Host recognition
C. Host finding – Host habitat finding – Host acceptance – Host recognition
D. None of these