The development of Periplaneta americana is

Options

A. Holometabolous
B. Paurometabolous
C. Hemimetabolous
D. Ametabolous

Explanation

**Step-by-Step Solution:**

1. **Understanding Development Types**: The development of organisms can be categorized into different types based on their metamorphosis. The main types are holometabolous, hemimetabolous, and ametabolous.

2. **Defining Holometabolous Development**: Holometabolous development involves complete metamorphosis, which includes four distinct stages: egg, larva, pupa, and adult (imago). An example of this type of development is seen in butterflies.

3. **Defining Hemimetabolous Development**: Hemimetabolous development is characterized by incomplete metamorphosis. In this type, there is no pupal stage; instead, the organism develops directly from the nymph stage to the adult stage. An example of hemimetabolous development is the grasshopper.

4. **Defining Ametabolous Development**: Ametabolous development refers to a type of development where there is no metamorphosis. The young resemble the adults and grow gradually without distinct stages. An example of this is the silverfish.

5. **Identifying the Development of Periplaneta americana**: The development of Periplaneta americana, commonly known as the cockroach, is classified as porometabolous. This means it undergoes gradual metamorphosis, where the immature stages (nymphs) resemble small adults.

6. **Conclusion**: Therefore, the correct answer to the question regarding the development of Periplaneta americana is that it is porometabolous.

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