Insect life cycles and reproduction MCQs

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

  1. Which life cycle stage is common to insects with complete metamorphosis?
    • A) Egg
    • B) Nymph
    • C) Larva
    • D) Pupa
      Answer: D) Pupa

  1. What is the primary function of the pupa stage in complete metamorphosis?
    • A) Growth and feeding
    • B) Molting
    • C) Transformation into adult form
    • D) Egg development
      Answer: C) Transformation into adult form

  1. Which stage comes immediately after the larval stage in complete metamorphosis?
    • A) Egg
    • B) Pupa
    • C) Adult
    • D) Nymph
      Answer: B) Pupa

  1. In insects with incomplete metamorphosis, what is the equivalent stage to the pupa in complete metamorphosis?
    • A) Nymph
    • B) Egg
    • C) Larva
    • D) Adult
      Answer: A) Nymph

  1. Which of the following orders of insects undergoes incomplete metamorphosis?
    • A) Lepidoptera
    • B) Diptera
    • C) Orthoptera
    • D) Coleoptera
      Answer: C) Orthoptera

  1. In which life cycle stage do insects primarily focus on growth and feeding?
    • A) Egg
    • B) Nymph
    • C) Pupa
    • D) Adult
      Answer: B) Nymph

  1. How many stages are there in the complete metamorphosis of an insect?
    • A) Three
    • B) Four
    • C) Five
    • D) Six
      Answer: B) Four

  1. What is the primary purpose of the egg stage in insect reproduction?
    • A) Growth
    • B) Development
    • C) Reproduction
    • D) Protection
      Answer: C) Reproduction

  1. Which stage follows the adult stage in the life cycle of insects with complete metamorphosis?
    • A) Nymph
    • B) Pupa
    • C) Larva
    • D) Egg
      Answer: A) Nymph

  1. What is a characteristic of the larval stage in insects with complete metamorphosis?
    • A) Non-feeding
    • B) Non-reproductive
    • C) Active feeding
    • D) Cocoon formation
      Answer: C) Active feeding

  1. In insects that undergo incomplete metamorphosis, which stage resembles the adult form but is not fully developed?
    • A) Egg
    • B) Larva
    • C) Nymph
    • D) Pupa
      Answer: C) Nymph

  1. Which stage of insect development is often responsible for dispersal and mating?
    • A) Nymph
    • B) Egg
    • C) Adult
    • D) Larva
      Answer: C) Adult

  1. In which stage do insects with incomplete metamorphosis undergo several molts?
    • A) Pupa
    • B) Nymph
    • C) Egg
    • D) Adult
      Answer: B) Nymph

  1. What is the function of the larval stage in insects with complete metamorphosis?
    • A) Transformation
    • B) Mating
    • C) Growth and feeding
    • D) Egg production
      Answer: C) Growth and feeding

  1. Which stage is absent in the life cycle of insects with incomplete metamorphosis?
    • A) Egg
    • B) Larva
    • C) Pupa
    • D) Adult
      Answer: C) Pupa

  1. What term describes the process of shedding the exoskeleton in insects?
    • A) Metamorphosis
    • B) Ecdysis
    • C) Pollination
    • D) Fertilization
      Answer: B) Ecdysis

  1. Which stage in the life cycle of insects with complete metamorphosis is typically spent in a protective casing?
    • A) Egg
    • B) Larva
    • C) Pupa
    • D) Nymph
      Answer: C) Pupa

  1. How do insects in the nymph stage differ from their adult forms in incomplete metamorphosis?
    • A) They have different body parts
    • B) They do not undergo molting
    • C) They lack wings and reproductive organs
    • D) They do not feed
      Answer: C) They lack wings and reproductive organs

  1. In which stage does an insect often undergo the most significant physiological changes?
    • A) Egg
    • B) Larva
    • C) Pupa
    • D) Adult
      Answer: C) Pupa

  1. Which life cycle stage is crucial for the survival and reproduction of insects with incomplete metamorphosis?
    • A) Egg
    • B) Larva
    • C) Nymph
    • D) Adult
      Answer: D) Adult

  1. What does the term “complete metamorphosis” refer to?
    • A) Development from egg to adult without a pupal stage
    • B) The presence of a larval stage followed by a pupa and then an adult
    • C) Development directly from nymph to adult
    • D) The presence of multiple molts during the nymph stage
      Answer: B) The presence of a larval stage followed by a pupa and then an adult

  1. In which stage do insects typically enter a dormant period?
    • A) Nymph
    • B) Larva
    • C) Pupa
    • D) Adult
      Answer: C) Pupa

  1. How do insects in the order Orthoptera typically reproduce?
    • A) Sexual reproduction with internal fertilization
    • B) Asexual reproduction
    • C) Parthenogenesis
    • D) Budding
      Answer: A) Sexual reproduction with internal fertilization

  1. What is the primary role of the adult stage in insects?
    • A) Growth
    • B) Feeding
    • C) Reproduction
    • D) Molting
      Answer: C) Reproduction

  1. Which life cycle stage involves a significant change in body structure and function?
    • A) Nymph
    • B) Larva
    • C) Pupa
    • D) Adult
      Answer: C) Pupa

  1. In insects with complete metamorphosis, what happens during the pupal stage?
    • A) Growth and feeding
    • B) Development of wings
    • C) Transformation into adult form
    • D) Egg laying
      Answer: C) Transformation into adult form

  1. Which insect order is known for having a distinct egg, larva, pupa, and adult stages?
    • A) Coleoptera
    • B) Orthoptera
    • C) Hemiptera
    • D) Diptera
      Answer: D) Diptera

  1. What is the main purpose of the larval stage in complete metamorphosis?
    • A) Reproduction
    • B) Feeding and growth
    • C) Molting
    • D) Transformation
      Answer: B) Feeding and growth

  1. How many molts do insects in the nymph stage typically undergo?
    • A) One
    • B) Two
    • C) Several
    • D) None
      Answer: C) Several

  1. Which stage in incomplete metamorphosis resembles the adult form but is not fully mature?
    • A) Egg
    • B) Larva
    • C) Nymph
    • D) Pupa
      Answer: C) Nymph

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