Florida Teacher Certification Examinations (FTCE) Subject Area Practice Test

The life cycle of a butterfly exemplifies complete metamorphosis, which consists of four distinct stages: egg, larva (caterpillar), pupa (chrysalis), and adult (butterfly). This process involves significant physiological changes as the organism develops from one stage to the next.

During the caterpillar stage, the butterfly feeds and grows, and then it enters the pupal stage, where it undergoes a dramatic transformation. This transformation is characterized by the reorganization of its body structure, which is why complete metamorphosis is often referred to as holometabolism. Each stage looks very different from the others, which differentiates complete metamorphosis from incomplete metamorphosis, where the young (nymphs) more closely resemble the adults and develop through gradual changes rather than distinct stages.

The other options do not correctly describe the butterfly's life cycle. Incomplete metamorphosis involves fewer stages, and the young resemble smaller adults rather than undergoing the significant transformations characteristic of a butterfly's development. Simple and differentiated metamorphosis are not recognized classifications in entomology regarding the complete cycle of butterflies. Therefore, understanding the four distinct stages and their transformations underscores why complete metamorphosis is the correct answer in this case