Question

Choose the correct statement for Periplaneta americana.

• 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 1

The correct option is D It is nocturnal and present in damp places

The cockroach has a single heart which consists of an elongated muscular tube lying along mid dorsal line of its thorax and abdomen.

It has 3 thoracic segments namely prothorax, mesothorax and metathorax.

Only males bear a pair of short, threadlike anal styles.

They are nocturnal omnivores which are mostly found in damn places.