Platyhelminthes Test PDF

Platyhelminthes test Assigned to FOURTH Zoology by Mr. Pullen Closed 58 Questions 65/67 pts Platyhelminthes test 1 / 1 1. A B C D 1 / 1 2. A B C D E 1 / 1 3. A B C D E 0 / 1 4. A B C D E 1 / 1 5. A B C D 1 / 1 6. A B C D 1 / 1 7. A B...

Platyhelminthes test Assigned to FOURTH Zoology by Mr. Pullen Closed 58 Questions 65/67 pts Platyhelminthes test 1 / 1 1. A B C D 1 / 1 2. A B C D E 1 / 1 3. A B C D E 0 / 1 4. A B C D E 1 / 1 5. A B C D 1 / 1 6. A B C D 1 / 1 7. A B C D 1 / 1 8. A B C D 1 / 1 9. A B C D 1 / 1 10. A B C D 1 / 1 11. A B C D E 1 / 1 12. A B C D 1 / 1 13. A B C D 1 / 1 14. A B C D 1 / 1 15. A B C D 1 / 1 16. A B C D 1 / 1 17. A B C D 1 / 1 18. A B C D 1 / 1 19. A B C D E 1 / 1 20. A B C D E 1 / 1 21. A B C D 1 / 1 22. A B C D 1 / 1 23. A B C D 1 / 1 24. A B C D 1 / 1 25. A B C D 1 / 1 26. A B C D 1 / 1 27. A B C D 1 / 1 28. A B C D E 1 / 1 29. A B C D E 1 / 1 30. A B C D E 1 / 1 31. A B C D 1 / 1 32. A B C D 1 / 1 33. True False 1 / 1 34. True False 1 / 1 35. True False 1 / 1 36. True False 1 / 1 37. True False 1 / 1 38. True False 0 / 1 39. True False 1 / 1 40. True False 1 / 1 41. True False 1 / 1 42. True False 1 / 1 43. True False 1 / 1 44. True False 1 / 1 45. True False 1 / 1 46. True False 1 / 1 47. True False 1 / 1 48. A B C D 1 / 1 49. A B C D 1 / 1 50. A B C D 1 / 1 51. A B C D 1 / 1 52. A B C D 1 / 1 53. A B C D 1 / 1 54. A B C D 1 / 1 55. A B C D 2 / 2 56. What type of symmetry do flatworms have? How does this type of symmetry benefit them? Over time as evolution transpired, new evolutionary advantages developed allowing later phyla to become more successful and advanced in terms of their body plans and functionalities. Flatworms' symmetry being one of those developments, that is bilateral symmetry: the most efficient. Bilateral symetry is incredibly beneficial toward flatworms as it allows them to move with intention and more efficiently than previous phyla, which benefits them and stands as a cornerstone in terms of evolution. To further support this point, we can look at previous phyla such as phylum Porifera which has assymetrical aspects, making them non-efficient in movement regard and made them have to make up for this with other idiosyncrasies they possess like filtering almost a ton of water in a of water for just a little bit of food. In addition to this, it also permits for the development of cephalization which is a centralized concentration of nerves on one end of the body that forms a head. 6 / 6 57. Explain three evolutionary advantages the body plan of a flatworm has over that of a cnidarian. How are each of these adaptations specifically beneficial? Bilateral vs Radial, Organ vs tissues, triploblastic vs diploblasts Over time, flatworms have developed significantly and have come far from the previous phyla that have more primitive traits. For example, flatworms possess bilateral symmetry in contrast to a cindiarian's assymetrical body plan. This adaptation specifically benefits the flatworm as it allows them to move more efficiently and with intention in contrast to a cnidarian. Another adaptation would be the development of 3 germ layers, the ectoderm, mesoderm, and endoderm in contrast to the cnidarian's 2 layers, ectoderm and endoderm. This is an incredible advancement as it allows for the development of more specialized and complex organs for the flatworm that assist it significantly. Finally, the final adaptation ties into the previous adaptation but is still specific. Flatworms have organs compared to cnidarian's tissues. This is specifically beneficial because it allows for a variety of different functions that assist the flatworm throughout its lifescycle. One development would be the auricles that detect smell and touch specifically in contrast to a cnidarian having to use only tissue cells to detect light changes, chemical inbalances, and other small fractional things unlike a flatworm. 4 / 4 58. Harlan inherited his favorite uncle's pet planarian, Juno. Harlan had always dreamed of starting his own planarian farm but due to shipping restrictions he was unable to order a mate for Juno to start his dream farm. After doing some research, Harlan hatched a plan. 6 months later Harlan had his farm thriving with happy Planaria. A friend offered to do some genetic testing on Harlan's pets and discovered significant genetic diversity within the population. Please offer an explanation as to how Harlan accomplished this feat. Address the fact that the planarians are not clones. Although Harlan only possessed one planarian, Juno, planarians are capable of a form of asexual reproduction called fission. This means that during the period of 6 months, Juno was asexually reproducing by using this method creating different forms of planarians that would eventually be able to reproduce with sexual reproduction. This is because planarians are hermaphroditic so the clones would eventually reproduce with one another creating genetic diversity over a period of time. I think of it as an image being copied continuously which creates distortion. You've Submitted Your Formative! Your submission is not editable. Current Score 97% Points: 65 / 67 Progress Submitted Fully Graded Actions Your teacher is allowing retakes. You have 1 remaining.