Which three terms describe the major parts of an insect?

Which three terms describe the major parts of an insect?

• A. Head, body, abdomen
• B. Head, thorax, abdomen
• C. Head, body, thorax
• D. Head, spiracle, thorax

Answer: (B)

Insects have three main body regions, called tagmata: head, thorax, and abdomen. The head houses the eyes, antennae, and mouthparts for sensing and feeding. The thorax is the center for movement, bearing the legs and most wings. The abdomen contains much of the digestive and reproductive systems. This three-part division is the standard way scientists describe an insect’s body, making head, thorax, and abdomen the correct trio. The other options mix in a non‑distinct region like “body” or include structures such as spiracles that aren’t considered major body parts.

Insects have three main body regions, called tagmata: head, thorax, and abdomen. The head houses the eyes, antennae, and mouthparts for sensing and feeding. The thorax is the center for movement, bearing the legs and most wings. The abdomen contains much of the digestive and reproductive systems. This three-part division is the standard way scientists describe an insect’s body, making head, thorax, and abdomen the correct trio. The other options mix in a non‑distinct region like “body” or include structures such as spiracles that aren’t considered major body parts.