Arachnida MCQs December 4, 2025September 28, 2024 by u930973931_answers 30 min Score: 0 Attempted: 0/30 Subscribe 1. Arachnids are characterized by having how many pairs of legs? (A) Two (B) Eight (C) Six (D) Four 2. Which of the following is NOT a class within the Arachnida? (A) Diplopoda (millipedes) (B) Scorpiones (scorpions) (C) Araneae (spiders) (D) Acari (mites and ticks) 3. Arachnids breathe through structures called: (A) Gills (B) Lungs (C) Book lungs or tracheae (D) Skin 4. Which of the following arachnids is known for having a venomous sting? (A) Scorpion (B) Tick (C) Spider (D) Mite 5. The body of an arachnid is divided into two main parts known as: (A) Head and thorax (B) Head and abdomen (C) Thorax and abdomen (D) Cephalothorax and abdomen 6. Arachnids are primarily: (A) Herbivores (B) Parasites (C) Omnivores (D) Carnivores 7. Which of the following arachnids uses silk for building webs? (A) Scorpion (B) Tick (C) Spider (D) Mite 8. What is the main function of the chelicerae in arachnids? (A) Sensory reception (B) Locomotion (C) Defense (D) Feeding 9. Which class of arachnids includes the largest species? (A) Pseudoscorpiones (B) Araneae (C) Scorpiones (D) Acari 10. Ticks are known to transmit which of the following diseases? (A) Malaria (B) Zika virus (C) Lyme disease (D) Tuberculosis 11. The term "molting" in arachnids refers to: (A) The process of feeding (B) The mating process (C) The shedding of the exoskeleton (D) The development of young 12. Arachnids do NOT have: (A) Compound eyes (B) Antennae (C) Jointed legs (D) An exoskeleton 13. Which of the following is a common feature of all arachnids? (A) Eight legs (B) Three body segments (C) Wings (D) Soft bodies 14. The primary diet of most arachnids consists of: (A) Plant material (B) Blood (C) Other small animals (D) Decaying matter 15. The lifespan of arachnids can range from: (A) Months to decades (B) Weeks to years (C) Days to months (D) Hours to days 16. Which arachnid is known for its ability to regenerate lost limbs? (A) Spider (B) Scorpion (C) Harvestman (D) Tick 17. Arachnids can be found in: (A) Aquatic environments only (B) Only in extreme habitats (C) Both aquatic and terrestrial environments (D) Terrestrial environments only 18. What type of sensory structures do arachnids possess? (A) Compound eyes (B) Simple eyes and hairs (C) Echolocation (D) Chemoreceptors only 19. The venom of some spiders is primarily used for: (A) Digestion (B) Prey immobilization (C) Defense (D) Camouflage 20. Which of the following is NOT a typical habitat for arachnids? (A) Oceans (B) Deserts (C) Forests (D) Grasslands 21. The scientific study of arachnids is known as: (A) Arachnology (B) Entomology (C) Zoology (D) Myrmecology 22. In which class would you find the horsehair worm? (A) Scorpiones (B) Araneae (C) Pseudoscorpiones (D) Acari 23. The order of arachnids that includes harvestmen is called: (A) Scorpiones (B) Solifugae (C) Pseudoscorpiones (D) Opiliones 24. Which of the following arachnids can be found in freshwater environments? (A) Spider (B) Scorpion (C) Tick (D) Mite 25. How do most arachnids catch their prey? (A) Hunting (B) Trapping in webs (C) Luring with pheromones (D) All of the above 26. The venom of the black widow spider primarily affects: (A) The respiratory system (B) The circulatory system (C) The nervous system (D) The digestive system 27. Which arachnids are known for their ability to live in extremely arid conditions? (A) Ticks (B) Spiders (C) Scorpions (D) Mites 28. Which of the following is a distinguishing feature of the class Arachnida? (A) No antennae (B) Presence of wings (C) Segmented bodies (D) Three pairs of legs 29. The primary reproductive strategy of arachnids involves: (A) Oviparity (B) Viviparity (C) Both A and C (D) Ovoviviparity 30. Which of the following statements about arachnids is FALSE? (A) They all produce silk. (B) They have a simple or compound eye structure. (C) They do not have wings. (D) They have an exoskeleton.