Ecology and behavior of insects MCQs

By: Prof. Dr. Fazal Rehman Shamil | Last updated: September 12, 2024

  1. What is the primary role of insects in ecosystems?
    • A) Pollination
    • B) Predation
    • C) Decomposition
    • D) Habitat formation
      Answer: A) Pollination

  1. Which behavior is most commonly associated with social insects like bees and ants?
    • A) Solitary
    • B) Territorial
    • C) Cooperative
    • D) Migratory
      Answer: C) Cooperative

  1. What term describes the process of insects emitting chemicals to communicate with each other?
    • A) Echolocation
    • B) Phonation
    • C) Pheromones
    • D) Sonar
      Answer: C) Pheromones

  1. Which ecological role do decomposer insects primarily perform?
    • A) Pollination
    • B) Soil aeration
    • C) Nutrient recycling
    • D) Seed dispersal
      Answer: C) Nutrient recycling

  1. In which habitat are insects most diverse and abundant?
    • A) Deserts
    • B) Oceans
    • C) Tropical rainforests
    • D) Tundras
      Answer: C) Tropical rainforests

  1. What behavior is exhibited by insects to avoid predators?
    • A) Migration
    • B) Camouflage
    • C) Nest building
    • D) Pollination
      Answer: B) Camouflage

  1. Which insect behavior is crucial for successful mating in many species?
    • A) Migration
    • B) Territory marking
    • C) Courtship displays
    • D) Foraging
      Answer: C) Courtship displays

  1. What type of relationship do insects often have with flowering plants?
    • A) Commensalism
    • B) Parasitism
    • C) Mutualism
    • D) Predation
      Answer: C) Mutualism

  1. How do insects contribute to soil health?
    • A) By consuming plants
    • B) By predating other insects
    • C) By decomposing organic matter
    • D) By competing with plants for resources
      Answer: C) By decomposing organic matter

  1. Which insect behavior is used to find food resources?
    • A) Nesting
    • B) Foraging
    • C) Mating
    • D) Diapause
      Answer: B) Foraging

  1. What is the term for insects that are active during the night?
    • A) Diurnal
    • B) Nocturnal
    • C) Crepuscular
    • D) Seasonal
      Answer: B) Nocturnal

  1. What ecological impact do invasive insect species often have?
    • A) Enhance biodiversity
    • B) Promote native species growth
    • C) Disrupt local ecosystems
    • D) Improve soil quality
      Answer: C) Disrupt local ecosystems

  1. Which strategy do some insects use to protect their nests from predators?
    • A) Camouflage
    • B) Aggressive defense
    • C) Mimicry
    • D) Migration
      Answer: B) Aggressive defense

  1. What behavior do ants exhibit to establish dominance within a colony?
    • A) Nest building
    • B) Recruitment
    • C) Foraging
    • D) Aggression
      Answer: D) Aggression

  1. Which factor can influence the timing of insect activity?
    • A) Temperature
    • B) Moon phases
    • C) Humidity
    • D) All of the above
      Answer: D) All of the above

  1. What is a key adaptation for insects living in arid environments?
    • A) High fecundity
    • B) Ability to hibernate
    • C) Efficient water conservation
    • D) Large body size
      Answer: C) Efficient water conservation

  1. Which type of insect is known for its role in pollinating agricultural crops?
    • A) Dragonflies
    • B) Butterflies
    • C) Beetles
    • D) Moths
      Answer: B) Butterflies

  1. What type of behavior is exhibited by insects that migrate to avoid harsh environmental conditions?
    • A) Territorial
    • B) Diapause
    • C) Migration
    • D) Aggression
      Answer: C) Migration

  1. How do insects like bees and wasps contribute to ecosystem stability?
    • A) By predating on other insects
    • B) By spreading diseases
    • C) By pollinating plants
    • D) By decomposing dead animals
      Answer: C) By pollinating plants

  1. Which insect behavior is crucial for maintaining colony structure in social insects?
    • A) Foraging
    • B) Nest building
    • C) Task specialization
    • D) Mating
      Answer: C) Task specialization

  1. What adaptation helps insects survive in cold climates?
    • A) Thick exoskeleton
    • B) Diapause
    • C) High metabolic rate
    • D) Large body size
      Answer: B) Diapause

  1. Which factor most influences the distribution of insect species?
    • A) Food availability
    • B) Predation
    • C) Temperature
    • D) Water quality
      Answer: C) Temperature

  1. What is the primary reason for insect aggregation during mating season?
    • A) Foraging
    • B) Protection
    • C) Mate attraction
    • D) Temperature regulation
      Answer: C) Mate attraction

  1. How do insects like beetles help in forest ecosystems?
    • A) By pollinating plants
    • B) By decomposing dead wood
    • C) By predating on other insects
    • D) By improving soil quality
      Answer: B) By decomposing dead wood

  1. What behavior do insects exhibit to find mates over long distances?
    • A) Navigation by scent
    • B) Visual signaling
    • C) Acoustic signaling
    • D) All of the above
      Answer: D) All of the above

  1. Which insect order includes species that are commonly used as indicators of environmental health?
    • A) Diptera
    • B) Hemiptera
    • C) Coleoptera
    • D) Odonata
      Answer: D) Odonata

  1. What is the purpose of the dance behavior observed in honeybees?
    • A) To attract mates
    • B) To communicate the location of food
    • C) To establish territory
    • D) To signal danger
      Answer: B) To communicate the location of food

  1. Which adaptation helps insects avoid desiccation in hot environments?
    • A) High metabolic rate
    • B) Large surface area
    • C) Small body size and efficient water use
    • D) High fecundity
      Answer: C) Small body size and efficient water use

  1. How do insects like crickets and cicadas contribute to their ecosystem?
    • A) By decomposing organic material
    • B) By pollinating flowers
    • C) By providing food for predators
    • D) All of the above
      Answer: D) All of the above

  1. What is the main ecological benefit of insect larvae in aquatic environments?
    • A) Nutrient cycling
    • B) Food source for fish
    • C) Water purification
    • D) Sediment stabilization
      Answer: A) Nutrient cycling

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