Phylum Chordata MCQs

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1. What is the defining characteristic of the phylum Chordata?





2. Which of the following is NOT a subphylum of Chordata?





3. Which structure in vertebrates develops into the spinal column?





4. Which subphylum includes animals such as fish, amphibians, reptiles, birds, and mammals?





5. In chordates, the dorsal nerve cord is located:





6. Which of the following features is characteristic of the subphylum Urochordata?





7. The heart of most chordates is located:





8. Which of the following is a characteristic of all chordates at some stage in their life cycle?





9. Which class of vertebrates is characterized by having moist skin and undergoing metamorphosis?





10. In which group of chordates are the notochord and dorsal nerve cord retained throughout life?





11. Which of the following is a characteristic of mammals?





12. What is the primary function of the pharyngeal slits in aquatic chordates?





13. Which of the following vertebrates is ectothermic?





14. The largest group of vertebrates, which includes species with feathers and the ability to fly, is:





15. Which of the following classes of Chordata primarily lives in water and has scales?





16. What type of skeleton do most vertebrates possess?





17. In mammals, what is the role of hair?





18. What adaptation allows birds to be lightweight and capable of flight?





19. Which of the following structures develops into the inner ear in vertebrates?





20. What is the primary function of the swim bladder in bony fish?





21. Which class of vertebrates is characterized by the presence of scales and lays eggs on land?





22. Which group of chordates is known for having a notochord that develops into a vertebral column?





23. Which of the following is a characteristic of cartilaginous fish?





24. What is the primary role of the endostyle in chordates?





25. What adaptation allows reptiles to reproduce on land?





26. Which of the following adaptations do mammals have for regulating body temperature?





27. Which group of vertebrates is characterized by a three-chambered heart?





28. Which of the following is a key feature of the subphylum Cephalochordata?





29. Which class of chordates is known for their ability to fly and for having feathers?





30. What type of reproduction is common in most vertebrates?





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