Biology 30: Unit VI and VII

Porifera and Cnidaria



Part I True or False: Correct the false statements.



  1. Both Poriferans and Cnidarians live in aquatic environments. ____________



  1. Poriferans have two distinct tissue layers. _________



  1. Cnidarians have a psuedocoloem. __________



  1. Poriferans spend most of their life as a mobile larvae. __________



  1. Nematocysts are specialized digestive cells. _________



  1. Poriferans have radial symmetry. _________




  1. The medusa is the mobile stage of many __________





Part II: Clearly describe TWO ways in which the Porifera and Cnidaria are different













Part III: List and describe two methods of asexual reproduction in Sponges.





















Part IV:  Describe the sexual life cyle of  a Cnidarian.

























Part VI: Define the following terms:



  1. Collar cell










  1. Spicule









  1. Polyp









  1. Sessile














Worms and Starfish



Part I : Flat Worms


What symmetry is found in all flat worms ?





Do flat worms have a coelom ?




What is meant by a parasitic lifestyle ?































Par II: Nematodes:



Nematodes have a distinctive difference from the flat worms. Describe the differences between the flat worms and the round worms. (  Do not just say one is round and one is flat.
























Part IV : Annelids


Describe a distinctive feature of the annelids and give an example of an organism that shows this feature.














Part V: Molluscs



Describe two distinctive features of the Molluscs

















Part VI: Echinoderms



True or False: Correct the false statements.



  1. Echinoderms have a distinctive head. __________



  1. Echinoderms have a mesodermal skeleton__________



  1. The larval stage of Echinoderms are radially symmetrical _________



  1. Sea urchins belong to the Class Asteroidea ________



  1. Many Echinoderms are predatory. __________



  1. Sea cucumbers are Echinoderms. _________







Part I General features of the Arthropoda



True or False: Correct the False statements.



  1. All Arthropods have an internal skeleton similar to echinoderms. __________



  1. Arthropods have an increased capacity to move due to jointed appendages. ________



  1. Some Arthropods have developed the ability to fly. _________



  1. Arthropods have a closed circulatory system. ___________



  1. The main body plan of Arthropods consist of a head, coelom, and abdomen. _________






Part III: Arthropod classes:  For each of the following classes:


  1. Give an example
  2. Describe the key identifying features




  1. Arachnida











  1. Chilopoda
























  1. Crustacea






















  1. Insecta
























  1. Diplopoda

























Part I List three things common to all Chordates





















Part II: True or False: Correct all false statements


  1. Urochordata include the hagfish and lampreys. ___________



  1. Lancelets are aquatic gill breathing simple vertebrates. _________



  1. The Agnathans are known as jawless fish. _________



  1. Sharks and rays have bony skeletons. __________



  1. The development of the amniotic egg was first seen in the reptiles. _________



  1. Warm blooded organisms are found in the Osteichthes. __________



  1. Aves have a hard shelled egg. _________



  1. Mammalians have a three chambered heart. ____________



  1. Aquatic and terrestrial stages are found in the Monotremes. _______



  1. Mammals are covered in scales and nurse their young. ________







Part III: Chordate Class overview:   For each of the Chordate classes listed state the following information.


  1. An example
  2. Two distinctive defining features





  1. Reptilia





















  1. Chondrichtheyes

























  1. Mammalia





















  1. Aves


























  1. e) Amphibia







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