What is a signature characteristic of the female mosquito?

• A. Long proboscis with needle like stylets
• B. Bushy antennae
• C. Short palps
• D. Thick legs

Answer: (A)

The defining trait being tested is the specialized mouthparts that enable blood feeding. Female mosquitoes have a long, slender proboscis composed of needle‑like stylets that pierce the skin and reach blood vessels, allowing them to suck blood needed for egg development. This piercing, blood‑feeding apparatus is what sets the female apart in feeding behavior and is the signature feature being highlighted. By contrast, male mosquitoes do not bite humans and instead rely on nectar for food, aided by their bushy antennae used to detect female wingbeats. Short palps or thick legs don’t capture the same feeding specialization and aren’t distinctive indicators of the female’s biting role.