Organization of coelom, symmetry and metamerism - Question Bank
1. Which of the following is NOT a type of coelom organization?
2. The ability to regenerate lost body parts is often more pronounced in animals with:
3. In which type of symmetry are the body parts arranged around a central axis, often with a distinct top and bottom, but no left or right sides?
4. The term 'bilateral symmetry' implies the existence of:
5. Which of the following is an example of a metamerically segmented animal?
6. What is the significance of the coelom being lined by peritoneum (a mesodermal layer)?
7. The evolutionary trend towards bilateral symmetry is strongly correlated with the development of:
8. Which of the following is a key characteristic of the phylum Platyhelminthes regarding their body cavity?
9. The coelom in annelids serves as a hydrostatic skeleton, allowing for burrowing and locomotion. This is an example of:
10. An animal that can be divided into mirror-image halves along any plane passing through its central axis exhibits:
11. Which phylum exhibits a water vascular system, which is a unique feature related to its coelomic cavity?
12. The phenomenon where body segments become specialized for different functions (e.g., head, thorax, abdomen) is known as:
13. What distinguishes a true coelom from a pseudocoelom?
14. The dorsal nerve cord in chordates is an example of centralization, which is often linked to:
15. Which of the following is an example of an animal with radial symmetry?
16. The body cavity in a roundworm (e.g., Ascaris) is described as:
17. What is the main advantage of metamerism in terms of locomotion?
18. Which of these phyla exhibits true coelom?
19. In enterocoelous coelom formation, the coelom arises from:
20. Which of the following is a characteristic feature of bilateral symmetry?
21. The body of a tapeworm, while appearing segmented, is actually an example of:
22. What is the primary function of the mesenteries in coelomate animals?
23. Which type of symmetry is found in animals that are typically sessile or free-floating in aquatic environments?
24. The term 'schizocoelous' refers to the formation of the coelom by:
25. Which of the following is an example of an animal exhibiting metamerism?
26. In a radially symmetrical animal, what is the relationship between the oral and aboral surfaces?
27. Which of the following is NOT a characteristic of true coelomates?
28. The repetition of body parts along the anterior-posterior axis in segmented animals is termed:
29. Which of the following best describes the coelom organization in a pseudocoelomate animal?
30. Cephalization, the concentration of sensory organs and nerve tissue at the anterior end, is most commonly associated with which type of symmetry?
31. The development of a coelom is considered a significant evolutionary step. Which germ layer gives rise to the coelom?
32. Which of these phyla contains animals that are typically acoelomate?
33. The body cavity in acoelomate animals is filled with:
34. If an animal can be divided into two identical halves by only one specific plane passing through the midline, it exhibits:
35. Which of the following is a function of the coelom in many animals?
36. The segmentation observed in arthropods is considered homologous to that in annelids, indicating a shared evolutionary origin. This type of segmentation is called:
37. What is the term for an animal that has no symmetry?
38. Which phylum exhibits secondary radial symmetry, derived from an ancestral bilateral symmetry?
39. The presence of a coelom allows for greater complexity in which of the following?
40. Which of the following is an example of an animal exhibiting pseudocoelom?
41. In metamerism, the body is divided into segments. What is the term for the mesodermal partitions separating these segments?
42. Which type of symmetry is most advantageous for directed locomotion and cephalization?
43. Acoelomate animals, like flatworms, lack which of the following?
44. Which phylum is characterized by true metamerism?
45. What is a pseudocoelom?
46. Animals with bilateral symmetry typically possess which of the following?
47. Which of the following describes a coelomate animal?
48. An animal that exhibits radial symmetry has body parts arranged around a central axis. Which phylum is a classic example of radially symmetrical animals?
49. What is the primary characteristic of metamerism?
50. Which term describes the arrangement of organs within a body cavity?