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3.2 Arthropoda — Test 1
Q1. The unique features of arthropods include:✓ A jointed exoskeleton of chitin and jointed appendages
Q2. Book lungs are the respiratory organs of:✓ Scorpions and spiders (arachnids)
Q3. The exoskeleton of arthropods is made mainly of the polysaccharide:✓ Chitin
Q4. Arthropods grow by periodically shedding their exoskeleton, a process called:✓ Moulting (ecdysis)
Q5. The hormone that regulates moulting in arthropods is:✓ Ecdysone
Q6. Juvenile hormone in insects is secreted by the:✓ Corpora allata
Q7. The compound eye of insects such as the cockroach is made of many units called:✓ Ommatidia
Q8. The myriapods include:✓ Centipedes and millipedes
Q9. In insects of the order Diptera (flies), the hind pair of wings is modified into:✓ Halteres (balancing organs)
Q10. The nitrogenous waste primarily excreted by the cockroach is:✓ Uric acid
Q11. The excretory organs of insects are the:✓ Malpighian tubules
Q12. Peripatus (Onychophora) is regarded as a connecting link between:✓ Annelida and Arthropoda
Q13. Honey bee drones are:✓ Haploid fertile males
Q14. In a honey bee colony, the workers are:✓ Sterile diploid females
3.2 Arthropoda — Test 2
Q15. The rock bee, the largest Indian honey bee, is:✓ Apis dorsata
Q16. Pebrine is a disease of the:✓ Silkworm
Q17. Social life (eusociality) among insects is well seen in the orders:✓ Isoptera (termites) and Hymenoptera (bees, ants, wasps)
Q18. Which animal belongs to the phylum Arthropoda?✓ Silver fish (an insect)
Q19. Which one is NOT a larva of arthropods?✓ Veliger
Q20. Tracheae, a system of branching air tubes, are the respiratory organs of:✓ Insects
Q21. The hearing organ of the cockroach is located in the:✓ Legs (and cerci, as sensory structures)
Q22. Apodemes in the cockroach provide:✓ Internal points for muscle attachment
Q23. The crustaceans differ from insects in typically having:✓ Two pairs of antennae and biramous appendages
Q24. The common component of the crustacean exoskeleton and the fungal cell wall is:✓ Chitin
Q25. Halteres, found in true flies, function as:✓ Balancing organs during flight
Q26. The ink gland, used to escape predators, is present in the:✓ Cuttlefish (a mollusc)
Q27. Lac, used to make shellac, is produced by the:✓ Lac insect
Q28. Silk is produced by the:✓ Silkworm (larva of a moth)
3.2 Arthropoda — Test 3
Q29. Complete metamorphosis (egg → larva → pupa → adult) is shown by:✓ Butterflies, beetles and flies
Q30. Incomplete metamorphosis, lacking a pupal stage, is seen in:✓ Cockroaches and grasshoppers
Q31. The mouthparts of a mosquito are modified for:✓ Piercing and sucking
Q32. The honey bee communicates the direction and distance of food by a:✓ Waggle dance
Q33. The first larval stage of many crustaceans (e.g. prawns) is the:✓ Nauplius
Q34. Termites are placed in the insect order:✓ Isoptera
Q35. Butterflies and moths belong to the insect order:✓ Lepidoptera
Q36. Beetles, the largest insect order, belong to:✓ Coleoptera
Q37. The open circulatory system of arthropods means that:✓ Blood (haemolymph) bathes the organs in a haemocoel
Q38. Spiders and scorpions belong to the arthropod class:✓ Arachnida
Q39. Insects are distinguished from other arthropods by having:✓ Three pairs of legs and a body in three parts
Q40. Apis (honey bee) and ants belong to the order:✓ Hymenoptera
Q41. The exoskeleton of arthropods provides all of these benefits EXCEPT:✓ Continuous growth without moulting
Q42. Pheromones are chemicals used by insects to:✓ Communicate with other members of the same species
3.2 Arthropoda — Test 4
Q43. The structure that helps the cockroach detect air currents and danger is the:✓ Cercus (anal cerci)
Q44. Crabs, prawns and lobsters belong to the arthropod class:✓ Crustacea
Q45. Mosquitoes are important vectors that transmit diseases including:✓ Malaria, dengue and filariasis
Q46. The structure unique to insects that allows efficient flight is the:✓ Wing arising from the thorax
Q47. A defining ecological role of insects includes all of these EXCEPT:✓ Producing most of the world's oxygen
Q48. Neurogenic hearts, where the heartbeat is initiated by nerve impulses, are found in:✓ Many crustaceans (and some other arthropods)
Q49. The chitinous exoskeleton of arthropods is secreted by the:✓ Epidermis (hypodermis)
Q50. Parthenogenesis, development from an unfertilised egg, occurs in some:✓ Aphids and honey bee drones
Q51. Warning (aposematic) colouration in insects such as the monarch butterfly serves to:✓ Signal that the insect is toxic or distasteful
Q52. The largest class within the phylum Arthropoda (and the animal kingdom) is:✓ Insecta
Q53. Spiracles in insects are:✓ External openings of the tracheal system
Q54. Sericulture refers to the rearing of:✓ Silkworms for silk
Q55. Apiculture is the practice of rearing:✓ Honey bees