Butterfly Metamorphosis

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Questions and Answers

What is the biological process characterized by dramatic changes in form and structure?

  • Metamorphosis (correct)
  • Respiration
  • Hibernation
  • Photosynthesis

What is the final stage of metamorphosis in butterflies?

  • Egg
  • Adult (correct)
  • Pupa
  • Larva

What is the duration of the pupa stage in butterflies?

  • 1-2 years
  • 1-4 months
  • 1-2 days
  • 2-4 weeks (correct)

What is the main function of the larva stage in butterflies?

<p>To eat constantly to grow and store energy (D)</p> Signup and view all the answers

Where do female butterflies typically lay their eggs?

<p>On leaves or stems (C)</p> Signup and view all the answers

What is the average lifespan of an adult butterfly?

<p>1-4 weeks (C)</p> Signup and view all the answers

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Study Notes

Metamorphosis

  • Definition: A biological process in which an animal undergoes a series of physical transformations from birth to adulthood
  • In butterflies, metamorphosis involves four stages: egg, larva, pupa, and adult
  • Characterized by dramatic changes in form and structure

Adult

  • Also known as imago
  • Final stage of metamorphosis
  • Characteristics:
    • Wings: fully developed, colorful, and delicate
    • Body: slender, elongated, and hairy
    • Mouthparts: modified for sipping nectar from flowers
    • Reproductive organs: fully developed for mating and egg-laying
  • Lifespan: varies by species, typically 1-4 weeks

Pupa (Chrysalis)

  • Stage of metamorphosis where transformation from larva to adult occurs
  • Characteristics:
    • Non-mobile, resting stage
    • Body: encased in a protective casing (chrysalis)
    • Tissues and organs are reorganized to form adult structures
    • Duration: varies by species, typically 2-4 weeks

Egg

  • First stage of metamorphosis
  • Characteristics:
    • Laid on leaves or stems by female butterfly
    • Small, oval, and usually yellow or white
    • Fertilized by male butterfly's sperm
    • Incubation period: varies by species, typically 3-4 days

Larva (Caterpillar)

  • Second stage of metamorphosis
  • Characteristics:
    • Eats constantly to grow and store energy
    • Body: segmented, worm-like, and often hairy
    • Legs: several pairs of prolegs and thoracic legs
    • Instars: molts several times as it grows, typically 5-6 times
    • Duration: varies by species, typically 1-4 weeks

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