ACE Insect Biology & Identification 2

Question 1

Which insect order is characterized by having scales on the wings and a coiled proboscis for feeding?

Accepted Answer

Lepidoptera

Answer

Lepidoptera (moths and butterflies) are uniquely characterized by scales covering their wings and a coiled, sucking proboscis called a haustellum.

Question 2

What type of metamorphosis involves egg, nymph, and adult stages with no pupal stage?

Accepted Answer

Hemimetabolous

Answer

Hemimetabolous (incomplete metamorphosis) insects pass through egg, nymph, and adult stages, with nymphs gradually resembling adults.

Question 3

The spiracles of insects are primarily used for:

Accepted Answer

Gas exchange during respiration

Answer

Spiracles are external openings of the tracheal system that allow oxygen intake and carbon dioxide expulsion in insects.

Question 4

Which of the following correctly describes the difference between mandibulate and haustellate mouthparts?

Accepted Answer

Mandibulate mouthparts chew solid food; haustellate mouthparts pierce and suck liquid

Answer

Mandibulate insects use hardened mandibles to bite and chew solid food, while haustellate insects use modified mouthparts to pierce tissue and suck liquid.

Question 5

In insect taxonomy, which term refers to the protective wing covers in beetles (Coleoptera)?

Accepted Answer

Elytra

Answer

Elytra are the hardened, sclerotized forewings of beetles that protect the membranous hindwings used for flight.

(ACE) Associate Certified Entomologist Practice Test

(ACE) Associate Certified Entomologist Practice Test

ACE Insect Biology & Identification 2