What is ootheca?

Explanation

**Step-by-Step Solution:**

1. **Definition of Ootheca**: An ootheca is a protective casing or egg case that certain insects produce to encase their eggs. It serves as a protective structure that helps in the development of the embryos inside.

2. **Characteristics of Ootheca**: Oothecae are typically made of a hardened material that provides protection from environmental factors and predators. They can vary in shape and size depending on the species of insect.

3. **Examples of Insects with Ootheca**: One of the most well-known examples of an insect that produces an ootheca is the cockroach. The female cockroach lays her eggs in a structure known as an ootheca, which can contain multiple eggs.

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