41. Onychophorans and tardigrades have jointed appendages. A. True B. False 42.S

Question

41. Onychophorans and tardigrades have jointed appendages. A. True B. False 42.Spiders are crustaceans A. True B. False 43. Nematodes have musculature. A. True B. False 44. Mollusca, Nematoda, and Arthropoda are all coelomate protostomes A. True B. False 45. Leeches belong to the same class as millipedes A. True B. False 46. The oral stylets of tardigrades are used to pierce plant and algae cells. A. True B. False 47. All Mandibulata and none of the Chelicerata have mandibles. A. True B. False 48. Malpighian tubules are excretory structures A. True B. False 49. The movement of earthworms is accomplished by alternating contraction of longitudinal and circular muscles. A. True B. False 50. Nemerteans are typically predators A. True B. False 51. What do nematodes and arthropod have in common? A. Both have jointed appendages. B. Both molt their cuticle. C. Both include species that can fly. D. Both include only marine species 52. Which of the following taxa typically has tracheae and spiracles? A. Crustacea B. Nematoda C. Tardigrada D. Hexapoda E. All of the above 53 Which feature do tardigrades and onychophorans have in common? A. Both have jointed appendages. B. Both are abundant and species rich phyla. C. Both are abundant in marine environments. D. Both molt their cuticle. E. None of the above

Explanation / Answer

41) Onychophorans and tardigrades have jointed appendages – Yes.

They are known to have jointed appendages and it is one of its exquisite characteristic which helps in many purposes.

42) False – They are not crustaceans but chelicerate and have a pair of feeding structure to get their nutrition

43) False – As in nematodes the muscles branch out into the nerves

44) yes, the molluscs, nematodes and arthropoda are all coelomate proteostomes. In this the mouth develops from first opening into the embryonic gut. i.e blastopore. The body cavity forms from the split in embryonic mesoderm

45) No, they are not as leeches no not have legs but millipedes have legs

Related Questions

Navigate

• Browse (All)
• Browse 4
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.