Choose the correct statement for Periplaneta americana

Options

A. it has 6 muscular hearts
B. It has 10 thoracic segments
C. Anal style is present in both male and female
D. It is nocturnal and present in damp places

Answer

To solve the question regarding the correct statement for Periplaneta americana (the American cockroach), we can analyze each option provided:

1. **Option A: It has six muscular hearts.**
- The American cockroach does not have six hearts. In fact, it has a single tubular heart that is divided into three chambers. Therefore, this statement is incorrect.

2. **Option B: It has ten thoracic segments.**
- The thorax of the American cockroach consists of three segments: the prothorax, mesothorax, and metathorax. Thus, this statement is also incorrect.

3. **Option C: Anal style is present in both male and female.**
- The anal styles (or cerci) are present only in male cockroaches, which means this statement is incorrect as well.

4. **Option D: It is nocturnal and present in damp places.**
- The American cockroach is indeed nocturnal and typically found in damp environments such as basements and crawl spaces. This statement is correct.

Based on the analysis of each option, the correct answer is **Option D: It is nocturnal and present in damp places.**