Answer: 14 to 16.
- A 7 to 9
- B 14 to 16
- C 20 to 22
- D 26 to 28
Correct answer: B. 14 to 16
Explanation: The clitellum is a dark glandular thickening covering segments 14, 15 and 16, and it secretes the cocoon during reproduction.
The four basic animal tissue types and their core functions: epithelial (covering/lining), connective (support and transport), muscular (movement), and neural (signal conduction).
Concept context
The four basic animal tissue types (epithelial, connective, muscular, neural) and the cockroach as a model organism for organ-system level organisation.