Life history of cockroach represents

Options

A. (a) ametaboly
B. (b) holometaboly
C. (c) paurometaboly
D. (d) none of these

Answer

To answer the question regarding the life history of cockroaches, we need to understand the types of metamorphosis and how they relate to the development of cockroaches. Here’s a step-by-step breakdown:

### Step-by-Step Solution:

1. **Understanding Metamorphosis**: Metamorphosis is the process of development that an organism undergoes from larva to adult. It can be classified into three main types: metaboly, holometaboly, and porometaboly (or hemimetaboly).

2. **Types of Metamorphosis**:
- **Metaboly**: This is the most primitive type of development where there is no distinct metamorphosis. The organism simply grows in size without any significant changes in form. An example of this is seen in silverfish.
- **Holometaboly**: This type involves complete metamorphosis with four distinct stages: egg, larva (or nymph), pupa, and adult. This is seen in insects like butterflies.
- **Porometaboly (Hemimetaboly)**: This type involves incomplete metamorphosis. The development occurs in three stages: egg, nymph, and adult. There is no pupal stage. This is characteristic of insects like cockroaches.

3. **Cockroach Life Cycle**: Cockroaches undergo porometabolic development. They start as eggs, hatch into nymphs, and then mature into adults without a pupal stage. This means that the life history of cockroaches represents porometaboly.

4. **Conclusion**: Based on the information above, we can conclude that the life history of cockroaches represents porometaboly, which is characterized by partial metamorphosis.

### Final Answer:
The life history of cockroaches represents **porometaboly** (or hemimetaboly).

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