Biology Worksheet 13 by U3B7jkAM

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									Biology Worksheet 13                       Student: ___________________________________
Chapter 23: The Diversity of Life 3

   1. Phylum with no body symmetry:
           a. Cnidaria        b. Porifera  c. Platyhelminthes     d. Nematoda
   2. Which of the following phyla has a body cavity?
           a. Porifera        b. Cnidaria  c. Platyhelminthes     d. Nematoda
   3. Jellyfish belong the to the phylum
           a. Porifera        b. Cnidaria  c. Platyhelminthes     d. Nematoda
   4. Phylum with radial body symmetry
           a. Porifera        b. Cnidaria  c. Platyhelminthes     d. Nematoda
   5. Which of the following is/are heterotrophs?
           a. Porifera        b. Cnidaria  c. Platyhelminthes     d. Nematoda e. All animal phyla
   6. Sponges belong to which phylum?
           a. Porifera        b. Cnidaria  c. Platyhelminthes     d. Nematoda
   7. Which of the following is/are multicelular?
           a. Porifera        b. Cnidaria  c. Platyhelminthes     d. Nematoda e. All animal phyla
   8. Which of the following does not have true tissues?
           a. Porifera        b. Cnidaria  c. Platyhelminthes     d. Nematoda
   9. Which of the following produces spicules?
           a. Porifera        b. Cnidaria  c. Platyhelminthes     d. Nematoda
   10. Of the phyla discussed, which were the first to have organs?
           a. Porifera        b. Cnidaria  c. Platyhelminthes     d. Nematoda
   11. Turbellarians are a type of
           a. Porifera        b. Cnidaria  c. Platyhelminthes     d. Nematoda

   12. Where does the word Cnidarian come from? __________________________

   13. What are the two main stages of life of Cnidaria? ____________________________ and
       ______________________________
   14. The organisms that make up coral reefs are examples of which of those two stages?
       ____________________________
   15. How do sponges expel water? ________________________________

   16. What organisms live in a mutualistic relationship with corals, supplying them with oxygen and recycled
       mineral wastes? _______________________________

   17. What do corals supply these organisms with? _______________________________________________

   18. Stage of Cnidaria that is sessile __________________________________

   19. What are spicules? _______________________________________

   20. What is a coelum? ______________________________________

   21. What is the importance of a coelum? _____________________________________________

								
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