TRB PG Assistant - Classification of insects up to order level Online Test (MCQ Quiz)

1. Which of the following is a key characteristic used to classify organisms into different phyla?

A) Number of legs B) Body segmentation C) Presence of wings D) Type of antennae

2. In the Linnaean system of classification, what is the hierarchical level directly below Class and directly above Family?

A) Order B) Genus C) Species D) Phylum

3. Which insect order is characterized by a complete metamorphosis with larval, pupal, and adult stages?

A) Orthoptera B) Hemiptera C) Coleoptera D) Odonata

4. Insects belonging to the order Hymenoptera typically possess which of the following features?

A) Two pairs of membranous wings, often held together by hamuli B) Forewings hardened into elytra C) Chewing mouthparts and hind legs adapted for jumping D) Piercing-sucking mouthparts and a hemelytra

5. The order Lepidoptera includes which well-known group of insects?

A) Beetles B) Butterflies and Moths C) Ants and Bees D) Dragonflies

6. Which insect order is known for having one pair of functional wings, with the hind wings reduced to small, club-like structures called halteres?

A) Orthoptera B) Diptera C) Coleoptera D) Hymenoptera

7. Insects with incomplete metamorphosis are found in which of the following orders?

A) Lepidoptera B) Hymenoptera C) Hemiptera D) Diptera

8. The order Coleoptera is distinguished by the presence of hardened forewings known as:

A) Membranes B) Elytra C) Tegmina D) Hemelytra

9. Which order of insects includes grasshoppers, crickets, and locusts, characterized by chewing mouthparts and jumping hind legs?

A) Phasmatodea B) Mantodea C) Orthoptera D) Blattodea

10. Insects with mouthparts adapted for piercing and sucking, and forewings that are leathery at the base and membranous at the tip (hemelytra), belong to which order?

A) Diptera B) Coleoptera C) Hemiptera D) Lepidoptera

11. The order Odonata comprises which group of insects?

A) Flies and mosquitoes B) Dragonflies and damselflies C) Bees and wasps D) Cockroaches and termites

12. Which insect order is characterized by a flattened body, rapid movement, and the presence of cerci at the posterior end?

A) Blattodea B) Mantodea C) Phasmatodea D) Orthoptera

13. Insects that are typically predatory, with raptorial forelegs and a triangular head, belong to the order:

A) Odonata B) Mantodea C) Phasmatodea D) Dermaptera

14. The order Phasmatodea is commonly known as:

A) Stick insects B) Earwigs C) Thrips D) True bugs

15. Which order of insects is characterized by biting or chewing mouthparts and hind legs adapted for leaping, often with elongated antennae?

A) Blattodea B) Mantodea C) Orthoptera D) Dermaptera

16. The order Dermaptera is easily recognized by the presence of prominent cerci that are typically pincer-like. What are these cerci commonly called?

A) Ovipositors B) Antennae C) Forceps D) Mandibles

17. Which order contains insects that are primarily plant feeders, often with a tube-like proboscis for sucking plant juices?

A) Coleoptera B) Diptera C) Hemiptera D) Hymenoptera

18. The common name 'thrips' refers to insects belonging to the order:

A) Thysanoptera B) Siphonaptera C) Phthiraptera D) Psocoptera

19. Insects that are wingless, flattened, and parasitic on birds and mammals, with piercing-sucking mouthparts, belong to the order:

A) Siphonaptera B) Phthiraptera C) Thysanoptera D) Psocoptera

20. Which order includes fleas, which are wingless, laterally compressed, and known for their powerful jumping ability?

A) Phthiraptera B) Siphonaptera C) Thysanoptera D) Psocoptera

21. The order Psocoptera, commonly known as booklice and barklice, are characterized by:

A) Chewing mouthparts and membranous wings B) Piercing-sucking mouthparts and reduced wings C) Modified mouthparts for lapping and often leathery forewings D) No mouthparts in the adult stage

22. Insects belonging to the order Mallophaga, often found on birds, have what type of mouthparts?

A) Piercing-sucking B) Chewing C) Sponging D) Lapping

23. Which order contains insects that are often referred to as 'true lice' and are obligate parasites of mammals?

A) Mallophaga B) Anoplura C) Siphonaptera D) Phthiraptera

24. The order Neuroptera includes insects such as lacewings, antlions, and Dobsonflies, which are characterized by:

A) Two pairs of highly modified wings B) One pair of membranous wings and halteres C) Two pairs of membranous wings with extensive venation D) Hardened forewings (elytra)

25. Which insect order is known for its complete metamorphosis, with larvae that are often legless and grub-like, and adults that are typically predatory?

A) Hymenoptera B) Lepidoptera C) Diptera D) Coleoptera

26. The order Trichoptera, or caddisflies, are closely related to Lepidoptera and are characterized by:

A) Scaly wings and coiled proboscis B) Membranous wings covered in fine hairs and larvae that build cases C) Hardened forewings and chewing mouthparts D) One pair of wings and halteres

27. Insects that undergo gradual metamorphosis, where nymphs resemble smaller versions of the adults, belong to the suborder:

A) Apterygota B) Pterygota C) Ametabola D) Hemimetabola

28. Which of the following is NOT a characteristic of insects in the class Insecta?

A) Three distinct body segments (head, thorax, abdomen) B) Three pairs of jointed legs attached to the thorax C) Two pairs of antennae D) An exoskeleton made of chitin

29. The term 'holometabolous' refers to insects that exhibit:

A) Incomplete metamorphosis B) Gradual metamorphosis C) Complete metamorphosis D) Ametabolous development

30. Which insect order includes ants, bees, wasps, and sawflies, and is known for its social behavior and often having a constricted 'waist'?

A) Coleoptera B) Lepidoptera C) Hymenoptera D) Diptera

31. Insects belonging to the order Diptera are characterized by:

A) Two pairs of membranous wings B) Hardened forewings (elytra) C) One pair of functional wings and halteres D) Forewings modified into hemelytra

32. The order Blattodea now includes which other group of insects due to recent taxonomic revisions?

A) Mantodea B) Phasmatodea C) Isoptera (termites) D) Dermaptera

33. Which order contains insects with mouthparts adapted for lapping or sponging, and typically a single pair of wings?

A) Hemiptera B) Diptera C) Hymenoptera D) Lepidoptera

34. The larvae of the order Lepidoptera are commonly known as:

A) Grubs B) Maggots C) Caterpillars D) Nymphs

35. Which insect order is characterized by mouthparts adapted for chewing or biting, and forewings that are leathery or hardened?

A) Odonata B) Orthoptera C) Coleoptera D) Hymenoptera

36. Insects in the order Mecoptera are known as scorpionflies and are characterized by:

A) Elongated snout and male genitalia resembling a scorpion's tail B) Transparent wings with no venation C) Laterally compressed bodies and hind legs adapted for jumping D) Forewings modified into elytra

37. The order Siphonaptera includes insects that are obligate parasites and are known for their:

A) Chewing mouthparts and flattened bodies B) Piercing-sucking mouthparts and laterally compressed bodies C) Sponging mouthparts and large compound eyes D) Hardened forewings and clubbed antennae

38. Which order contains insects that are often wingless, have chewing mouthparts, and are found in leaf litter or decaying wood?

A) Blattodea B) Mantodea C) Phasmatodea D) Psocoptera

39. The term 'ametabolous' development in insects refers to:

A) Development with a pupal stage B) Gradual change from nymph to adult C) No significant metamorphosis, with young resembling adults D) Wing development occurring only in the adult stage

40. Which insect order is characterized by the presence of a proboscis for siphoning nectar, and wings covered in tiny scales?

A) Diptera B) Hymenoptera C) Lepidoptera D) Coleoptera

41. Insects in the order Ephemeroptera, or mayflies, are known for:

A) Short-lived adult stage with non-functional mouthparts B) Long-lived larval stage and winged adults C) Complete metamorphosis with a hardened pupal case D) Nymphs that live in freshwater and adults that are predatory

42. Which order includes stoneflies, whose nymphs are aquatic and possess two cerci?

A) Odonata B) Ephemeroptera C) Plecoptera D) Trichoptera

43. The order Hemiptera is a diverse group that includes true bugs, aphids, cicadas, and scale insects. A common characteristic is:

A) Chewing mouthparts B) Piercing-sucking mouthparts C) Sponging mouthparts D) Vestigial mouthparts in adults

44. Which of the following insect orders is characterized by the absence of wings in all life stages?

A) Apterygota B) Pterygota C) Neoptera D) Polyneoptera

45. The suborder Pterygota is distinguished by:

A) Wingless condition B) Presence of wings (even if reduced or lost secondarily) C) Metamorphosis without a pupal stage D) Three pairs of walking legs

46. Insects in the order Zoraptera are small, rarely seen insects that resemble:

A) Ants B) Termites C) Both ants and termites D) Beetles

47. Which order contains insects commonly known as chewing lice, which have broad heads and chewing mouthparts?

A) Anoplura B) Mallophaga C) Siphonaptera D) Phthiraptera

48. The order Strepsiptera is unique because it is:

A) Holometabolous with free-living larvae B) Endoparasitic on other insects, with females being larviform C) Hemimetabolous with aquatic nymphs D) Ametabolous with wingless adults

49. Which insect order is characterized by membranous wings with reduced venation, and a tendency to fold wings over the back at rest?

A) Orthoptera B) Blattodea C) Hymenoptera D) Isoptera

50. The classification of insects up to the order level primarily relies on morphological characteristics such as wings, mouthparts, and:

A) Body color B) Number of eyes C) Metamorphosis type D) Habitat preference

Classification of insects up to order level - Online Test

Test Results