Question

Which of these statements is not true about cockroaches?

• A. Cockroaches have an endoskeleton made of chitin which spans the whole body.
• B. The body of the cockroach can be divided into three parts- head, thorax and abdomen.
• C. Head is made of six fused segments.
• D. The mouth consists of chitinous mouth parts.

Answer 1

Answer: (A)

Cockroaches are included in the class Insecta under the phylum Arthropoda. Cockroaches are invertebrates which lack endoskeleton. Rather, they have an exoskeleton made out of chitin covering the entire body. They have a segmented body divided into 3 sections: head, thorax and abdomen. Head is made up of six fused segments showing mobility at its neck. The mouth section of cockroach has 4 parts: labrum, labium, pair of mandibles and maxillae.