Entomology MCQs Set II


The quiz is designed to assess your understanding about the Agriculture Entomology. These MCQss is prepared by the Professors of Agri Entomology department and very much helpful for CSS, PMS, NTS, PPSC, FPSC, SPSC, lecturer, GRE Subject and all other competitive examinations. Choose the best answer from four given options. The answer keys is given at the end of the test


Entomology MCQs Set II

Select one option out of four given options

  1. A tormogen cell is always associated with a(n):




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  3. Chitin is a very important part of the insect's exoskeleton because:




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  5. Which structure lies below the frons and above the labrum?




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  7. Where is the genital opening found on a typical insect?




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  9. Parapsidal furrows are grooves found on the mesonotum of some parasitic wasps. These grooves would be located:




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  11. Which part of the exoskeleton lies between the wax layer and the cement layer?




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  13. Which suture is not found on the head capsule?




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  15. Which statement about valvulae is incorrect?




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  17. The cibarium is best described as:




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  19. Elastic regions of the exoskeleton:




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  21. Which layer(s) of the exoskeleton is(are) secreted by the epidermis?




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  23. Which structure is not part of the central nervous system?




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  25. An insect must use both of its compound eyes (simultaneously) in order to perceive:




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  27. The chemical trail produced by foraging ants would be classified as a(n):




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  29. Which statement about the insect's nervous system is incorrect?




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  31. The deutocerebrum innervates the:




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  33. An ommatidium is best defined as a:




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  35. Fly larvae (maggots) move away from a bright source of light. This is an example of a




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  37. A male empiid fly courts a female for 20 minutes and then gives up after he fails to elicit any response. This is an example of:




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  39. The circumesophageal connective joins the:




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  41. Compared to most learned behaviors, instinctive (innate) behavior is:




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  43. When laying eggs, a female insect returns to her larval host plant, even though she has not fed upon this plant during her adult life. This is an example of:




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  45. In most insects, the sense of smell is localized in the:




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  47. In insects with dichromatic (2 pigment) color vision, maximum color discrimination is in the range from:




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  49. The mandibular gland substance of the queen honey bee inhibits ovarian development among worker bees in the same hive. This is an example of a(n):




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  51. If a nerve impulse started in the tritocerebrum and passed through the stomodeal nervous system until it reached the heart, it would not pass through the:




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  53. An insect's mechanoreceptors would NOT be sensitive to:




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  55. Stridulation is a method of producing sound by:




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  57. In an ant nest, all workers are:




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  59. Which pair of structures have the most similar sensory functions?




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  61. A firefly would most likely be classified as a ________ insect




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  63. Female pseudergates may molt into determinant nymphs whenever:




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  65. All insects must communicate in order to:




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  67. Any chemical used to repel predators would always be classified as a(n):




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  69. Insects that share a common nest site but do not care for their young are said to be




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




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




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  75. The sterile-male technique works best when:




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




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  79. Anaphylactic shock is best described as an extreme type of:




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  81. 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?




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




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




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  87. 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?




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  89. Which of these is a cultural method for controlling insects?




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




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




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  95. Which common name is incorrectly written?




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  97. Which of these is an \




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




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  101. Which of these is likely to be regarded as the most "useful" biological control agent?




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




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




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  107. The pedicel is the name for the:




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  109. Aquatic immatures of All holometabolous insects are known as:




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  111. "Lumpers" sometimes include Blattodea and Phasmida as suborders of:




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  113. Chewing mouthparts are not found in:




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  115. In insect development, the germ band:




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  117. Which part of a molt does not occur during apolysis?




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  119. In larval insects, which hormone inhibits the development of imaginal discs?




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  121. In a normally developing insect, a high titer of juvenile hormone should not be found:




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  123. In an insect egg, the embryo begins to develop as soon as:




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  125. Which order would a "lumper" NOT include in the Orthoptera?




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  127. Which of these characteristics do insects and crustaceans have in common?




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  129. In an obtect pupa:




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  131. Which structures would be found in an eruciform larva, but not in a scarabaeiform larva




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  133. Which order is most closely related (phylogenetically) to the Neuroptera?




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  135. Which class is most closely related (phylogenetically) to the Insecta?




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  137. Which group of insects has simple metamorphosis?




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  139. Insect blood does not:




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  141. In insects, the first pair of post-oral appendages are called mandibles. What are these appendages called in Arachnids?




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  143. Which insects do NOT damage horticultural crops (as immatures)?




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  145. Which insects would be classified as decomposers?




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  147. Which sclerite lies below the epistomal suture?




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  149. Which statement about insect development is correct?




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  151. Which order is both ectognathous and wingless?




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  153. Why are termites classified as orthopteroids?




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  155. A terrestrial arthropod with more than five pairs of legs could not be a(n):




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  157. Which group of insects has incomplete metamorphosis?




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  159. Which insects do not feed on plants?




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  161. The recurrent nerve joins:




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  163. If an insect's developmental threshold is 15 degrees F, how many degree-days (DD. does it on a day when the average temperature is 72 degrees F?




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  165. Broad-spectrum detoxification enzymes are commonly found in:




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  167. If a population's intrinsic rate of increase ("r") is less than one, then the population is:




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  169. When a newly emerged queen honey bee hears the sound of "piping and quacking" from unemerged queens, she will find and destroy their cells. Apparently, these sounds are an example of:




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  171. Behavior patterns that change drastically over the lifetime of an insect are probably:




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  173. What information could NOT be determined from a life table?




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  175. A certain insect usually becomes active each day at dusk. If kept in the dark all day, it will still become active around sunset even though it cannot see the sun. This behavior is an example of:




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  177. Worker ants remember landmarks around their nest entrance & use these as a guide when returning home. This behavior is an example of:




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  179. Chemicals released by threatened aphids elicit defensive behavior among the ants that tend these aphids. Such chemicals would be best described as:




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  181. Substances in the frass produced by bark beetles attract predators & parasites to trees that are infested by these beetles. Such substance would be best described as




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  183. When predator changes its search image in response to a change in the density of prey, it exhibits a(n):




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  185. Which insects are most likely to pollinate foul-smelling flowers?




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  187. If an insect's subesophageal ganglion were paralyzed, it would be unable to:




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  189. Fly larvae (maggots) move directly away from a bright source of light. This is an example of a:




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  191. Ants remember a food trail by the location of landmarks along the way. This is an example of:




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  193. The central nervous system of an insect controls the:




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  195. The major differences between European and Africanized honey bees are:




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  197. The information content of a sound signal is based on changes in:




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  199. An ommatidium is the functional unit of the:




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