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Difficulty: EasyGrowth, Development, and Metamorphosis

In insects such as the housefly, growth and development occur through complete metamorphosis. Which of the following sequences correctly represents the sequential stages of complete metamorphosis?

  1. Egg → Larva → Pupa → ImagoAnswer
  2. B
    Egg → Nymph → Adult
  3. C
    Egg → Pupa → Larva → Adult
  4. D
    Egg → Larva → Adult

Answer

Egg → Larva → Pupa → Imago
Complete metamorphosis (holometabolous growth) proceeds sequentially through four distinct developmental forms: egg, larva, pupa, and adult (imago). The larva is specialized for feeding and growth, while the pupa undergoes internal cellular restructuring to form adult structures.

Step-by-Step Solution

1
Identify the type of metamorphosis requested.
The question specifies complete (holometabolous) metamorphosis.
Complete metamorphosis involves four distinct morphological stages.
2
Trace the developmental stages in chronological order.
The embryo hatches from the egg into an active feeding larva (maggot/caterpillar), transforms into a non-feeding pupa, and finally emerges as a sexually mature adult (imago).
The larval stage builds energy reserves, while the pupal stage undergoes tissue reorganization.

Key Concept

Complete metamorphosis (Holometabolous development)
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Topics

Growth, Development, and Metamorphosis

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