Maxillopoda MCQs December 4, 2025September 28, 2024 by u930973931_answers 30 min Score: 0 Attempted: 0/30 Subscribe 1. Maxillopoda is a class within which larger phylum? (A) Mollusca (B) Echinodermata (C) Annelida (D) Arthropoda 2. What is the common name for organisms in the Maxillopoda class? (A) Barnacles (B) Sea spiders (C) Horseshoe crabs (D) Crabs 3. Maxillopoda primarily inhabit which environment? (A) Marine (B) Freshwater (C) Terrestrial (D) All of the above 4. What distinguishes Maxillopoda from other crustaceans? (A) They have a hard shell. (B) They do not have compound eyes. (C) They have segmented bodies with multiple appendages. (D) They possess only two pairs of antennae. 5. Which of the following is a major group within Maxillopoda? (A) Cirripedia (B) All of the above (C) Ostracoda (D) Copepoda 6. Barnacles belong to which subclass of Maxillopoda? (A) Copepoda (B) Cirripedia (C) Ostracoda (D) Branchiura 7. What type of feeding mechanism do many copepods utilize? (A) Predation (B) Deposit feeding (C) Suspension feeding (D) Herbivory 8. Maxillopoda can be described as primarily: (A) Free-living (B) Parasitic (C) Terrestrial (D) Both A and B 9. The body of Maxillopoda is typically divided into how many main regions? (A) Two (B) Three (C) Four (D) Five 10. What is a distinctive feature of barnacles in the class Maxillopoda? (A) They have a soft body. (B) They have a calcareous shell. (C) They can fly. (D) They have long antennae. 11. In Maxillopoda, the first pair of appendages is modified into: (A) Mouthparts (B) Gills (C) Legs (D) Antennae 12. Which of the following statements about Copepoda is FALSE? (A) They are a major component of plankton. (B) They have a fused head and thorax. (C) They are exclusively freshwater organisms. (D) They have a cylindrical body shape. 13. Maxillopoda are known for their: (A) Complex reproductive systems (B) Unique larval stages (C) High mobility (D) Colorful exoskeletons 14. Which of the following is a parasitic member of Maxillopoda? (A) Barnacles (B) Fish lice (C) Copepods (D) Amphipods 15. Maxillopoda exhibit which type of reproduction? (A) Asexual reproduction (B) Budding (C) Both A and B (D) Sexual reproduction 16. Which of the following features is NOT typical of Maxillopoda? (A) Simple body structure (B) Compound eyes (C) Reduced segmentation (D) Presence of a carapace 17. The nauplius larva is a characteristic feature of which group within Maxillopoda? (A) Ostracoda (B) All of the above (C) Copepoda (D) Cirripedia 18. What type of body symmetry do Maxillopoda exhibit? (A) Radial symmetry (B) Pentaradial symmetry (C) Asymmetry (D) Bilateral symmetry 19. How many species of Maxillopoda are known to exist? (A) Over 13,000 (B) Approximately 2,000 (C) Fewer than 100 (D) Over 50,000 20. Which subclass of Maxillopoda is known for having a sessile lifestyle? (A) Cirripedia (B) Copepoda (C) Branchiura (D) Ostracoda 21. Maxillopoda are primarily classified based on: (A) Feeding habits (B) Habitat (C) Body structure (D) Reproductive strategies 22. Which of the following is a characteristic of Ostracoda? (A) They are exclusively marine. (B) They have a bivalve shell. (C) They lack appendages. (D) They are parasitic. 23. Maxillopoda are typically distinguished from other crustaceans by having: (A) Five pairs of legs (B) A fused thorax and abdomen (C) Four pairs of antennae (D) A reduced carapace 24. Which of the following is a common ecological role of Maxillopoda? (A) Planktonic consumers (B) Herbivores (C) Decomposers (D) Primary producers 25. The eyes of Maxillopoda are typically: (A) Absent (B) Simple (C) Compound (D) Faceted 26. Maxillopoda contribute to marine ecosystems by: (A) Both A and C (B) Acting as primary producers (C) Regulating nutrient cycling (D) Serving as prey for larger animals 27. Which of the following is a feature of the reproductive process in Maxillopoda? (A) External fertilization (B) Internal fertilization (C) Asexual budding (D) Binary fission 28. The respiratory system of Maxillopoda primarily involves: (A) Diffusion through the exoskeleton (B) Book lungs (C) Gills (D) Tracheae 29. Maxillopoda play an important role in: (A) Aquatic food webs (B) Coral reef building (C) Soil aeration (D) Terrestrial ecosystems 30. Which characteristic of Maxillopoda makes them efficient in their aquatic environment? (A) Rigid body structure (B) Reduced appendages (C) Bright coloration (D) Streamlined body shape