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| 1 | Describe 3 major differences between deuterostome and protostome development. |
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| 2 | Phyla Echinodermata, Hemichordata, and Chordata are protostomes. |
| A) | True |
| B) | False |
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| 3 | Echinoderms have an internal skeleton of calcareous plates called . |
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| 4 | In sea stars, the mouth is on the (lower) surface and the anus is on the (upper) surface. |
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| 5 | Trace the flow of water through the water vascular system of a sea star using the following structures: radial canal, stone canal, tube feet, madreporite, ampulla, ring canal. |
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| 6 | Sea urchins lack distinct arms, and their ossicles are fused into a solid shell called a . |
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| 7 | The mouth of a sea urchin contains five ossified plates used to scrape algae from rocks called an . |
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| 8 | How do sea cucumbers feed? |
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| 9 | The vertebrate ancestor probably had a similar body plan to a lanclet. |
| A) | True |
| B) | False |
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| 10 | What two traits do acorn worms share with chordates? |
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| 11 | What four traits do all chordates share? |
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| 12 | What does class Agnatha lack that other vertebrate classes have? |
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Answer choices:
| | A) | sense organ used to detect movement and vibration in the surrounding water
| | B) | moveable gill cover that protects the gills; in some species moves water over the gills
| | C) | sucking disk that attaches to a host
| | D) | cartilaginous rod that that forms the supporting axis of the body
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| 17 | Draw and label an amniotic egg. Describe the functions of the four membranes. |
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| 18 | A contour feather consists of a central and a number of smaller side-branches called , that are linked together by a set of and their hooks. |
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| 19 | What are two characters unique to mammals? |
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| 20 | Which of the seven classes of vertebrates are aquatic/terrestrial? |
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| 21 | Which of the terrestrial classes of vertebrates are poikilothermic/homeothermic? |
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| 22 | Which phylum or class in this exercise that you haven't seen before would you be most interested in learning more about? Why? |
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| 23 | Compare yourself to a beetle. Which significant evolutionary characteristics do you share and which do you not share? |
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