{"id":753,"date":"2019-02-12T20:29:07","date_gmt":"2019-02-13T03:29:07","guid":{"rendered":"https:\/\/blogs.ubc.ca\/mrpletsch\/?p=753"},"modified":"2020-02-07T18:18:09","modified_gmt":"2020-02-08T01:18:09","slug":"bio-11-simple-inverts-test-review","status":"publish","type":"post","link":"https:\/\/blogs.ubc.ca\/mrpletsch\/2019\/02\/12\/bio-11-simple-inverts-test-review\/","title":{"rendered":"Bio 11 Simple Inverts Test Review"},"content":{"rendered":"

Simple Inverts – Comparative Table Key<\/a><\/p>\n

Try These! SimpleInvertMCreview<\/a><\/p>\n

MC Key SimpleInvertMCreviewKey<\/a><\/p>\n

Practice Questions:<\/p>\n

    \n
  1. \n

    Which phyla was the first to develop a rudimentary cephalization<\/b>?<\/h4>\n<\/li>\n<\/ol>\n
      \n
    • Phylum Platyhelminthes – The Flatworms. This groups developed bilateral symmetry and a nervous system. They have a head region with simple accessory organs that detect changes in light (EYESPOTS). You probably saw these in our lab!<\/em><\/li>\n<\/ul>\n

      \"\"<\/p>\n

        \n
      1. \n

        Sketch a cladogram<\/b> of the the simple invertebrates. Please include phylum porifera, cnidarian, platyhelminthes, <\/b>and nematoda<\/b> and the derived character <\/b>that emerged between each group.<\/h4>\n<\/li>\n<\/ol>\n
        \"\"
        Figure 1: Current cladogram<\/figcaption><\/figure>\n

        3. Compare the tissue organization<\/b> in all four simple invertebrate phyla<\/b>. Describe how this shows an evolutionary continuum<\/b>.<\/h4>\n

        Porifera<\/strong><\/span> – No tissues, Cnidaria<\/strong> <\/span>– Primative tissue (2 layers – endoderm, ectoderm, mesoglea (jelly) in between), Platyhelminthes<\/strong> <\/span>– 3 layers, triploblastic acoelomate, Nematoda<\/strong> <\/span>– 3 layers, triploblastic with a pseudocoelom<\/p>\n

          \n
        • Tissue layers are getting more and more complex.<\/li>\n
        • The presence of a cavity, even though it isn’t a true body cavity, is still a major advancement. This allowed the one-way system to develop. More room for organs.<\/li>\n
        • Each group is building off the previous one. It shows progress over time from the shared characteristics that are developing.<\/li>\n<\/ul>\n

          4. Sketch a cross section of an acoelomate<\/b> and a pseudocoelomate<\/b>. Label the three cell layers <\/b>on each diagram.<\/h4>\n

          \"\"<\/p>\n

          5. Why is a pseudocoelom <\/b>not considered a true coelom?<\/h4>\n

          A true coelom (body cavity) is a space within the mesoderm. Organs formed inside a coelom<\/b> can freely move, grow, and develop independently of the body wall while fluid cushions and protects them from shocks. In humans, we have the pleural cavity (<\/strong>surrounds lungs), the pericardial cavity<\/strong> (surrounds heart), and the peritoneal cavity<\/strong> (surrounds digestive organs).<\/span><\/em><\/p>\n

          A pseudocoelom in not a true coelom<\/strong> since it is not a space within the mesoderm, but rather a space between layers. In this case it is a space between the endoderm and mesoderm.<\/em><\/p>\n

          6. What benefits does a one-way digestive system<\/b> give to organisms? Which was the first groups to develop this system?<\/h4>\n

          A one-way system allows for complete digestion of food and more time to adequately absorb nutrients. Eventually, as the digestive system became more complex, different nutrients\/substances good be processed as well. Also, the one-way system allowed for organisms to eat while expelling waste (I guess that sounds good), but this means waste removal does not interfere with eating.<\/em><\/p>\n

          And question 7 is all up to you! Use your knowledge and justify your answer with what you know:) I am looking for your ability to apply the knowledge and discuss the traits that both help identify and cause issues with your classification!<\/p>\n

           <\/p>\n","protected":false},"excerpt":{"rendered":"

          Simple Inverts – Comparative Table Key Try These! SimpleInvertMCreview MC Key SimpleInvertMCreviewKey Practice Questions: Which phyla was the first to…<\/p>\n","protected":false},"author":48401,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":true,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1200970],"tags":[],"class_list":["post-753","post","type-post","status-publish","format-standard","hentry","category-biology-11"],"_links":{"self":[{"href":"https:\/\/blogs.ubc.ca\/mrpletsch\/wp-json\/wp\/v2\/posts\/753","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.ubc.ca\/mrpletsch\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.ubc.ca\/mrpletsch\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.ubc.ca\/mrpletsch\/wp-json\/wp\/v2\/users\/48401"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.ubc.ca\/mrpletsch\/wp-json\/wp\/v2\/comments?post=753"}],"version-history":[{"count":4,"href":"https:\/\/blogs.ubc.ca\/mrpletsch\/wp-json\/wp\/v2\/posts\/753\/revisions"}],"predecessor-version":[{"id":1316,"href":"https:\/\/blogs.ubc.ca\/mrpletsch\/wp-json\/wp\/v2\/posts\/753\/revisions\/1316"}],"wp:attachment":[{"href":"https:\/\/blogs.ubc.ca\/mrpletsch\/wp-json\/wp\/v2\/media?parent=753"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.ubc.ca\/mrpletsch\/wp-json\/wp\/v2\/categories?post=753"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.ubc.ca\/mrpletsch\/wp-json\/wp\/v2\/tags?post=753"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}