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Pre-lab Inquiry List and explain the four chordate characteristics: a. b. C. d I

by | Apr 26, 2022 | Biology

 

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Pre-lab Inquiry
List and explain the four chordate characteristics:
a.
b.
C.
d
I
2.
Why is the Phylum Echinodermata considered sister to the Phylum Chordata?
What are the differences between the following subphyla?
Cephalochordata:
Urochordata:
Vertebrata:
A. What are the main characteristics that distinguish vertebrates from the other
chordates?
Why Does It Matter?
Explain the adaptive significance of the cranium, vertebrae, jaws, the tetrapod limb, and
the amniotic egg especially given that most “top predators” in an ecosystem are chordates.
Visit the following stations and observe and document the characteristics of the specimens
displayed. What are the characteristics that distinguish the following vertebrate groups;
Class Agnatha (Cyclostomes)
1. What are the evolutionary characteristics of the class?
Compare and contrast (general characteristics) of the Myxine glutinosa & Petromyzon
marinus.
b. Why are these organisms considered vertebrates if they lack true vertebrae?
Class Chondrichthyes
2.
What are the evolutionary characteristics of the class?
a.
What does the class name mean?
b.
A cartilaginous skeleton is a derived trait. How can you describe this phenomenon?
C
List the three groups included in this class:
Class Osteichthyes
3. What are the evolutionary characteristics of the class?
a.
What does the class name mean?
Class Amphibia
What are the evolutionary characteristics of the class?
a
Why does the class name mean
“two lives?*
Why does the class name mean
“two lives?”
b.
C.
On a separate sheet, illustrate the Rana sp. life cycle.
What are the benefits of metamorphosis?
Class Reptilia
5.
What are the evolutionary characteristics of the class?
a.
Draw and label the Amniotic egg.
“Super Order Archosauria’
6.
What are the evolutionary characteristics of the group?
a.
What order and class of animals make up the group?
Class Mammalia
1.
What are the evolutionary characteristics of the class?
T
a.
What are the three orders in this class?
b. Compare and contrast the reproductive strategies for each of the orders.
C
What are the benefits of a long gestation period (compared to a short gestation
period) in mammals?
CHORDATE WORKSHEET
Answer using complete sentences.
Questions below can be answered by viewing video titled “Chordates-CrashCourse Biology #24.
1. What are the four synapomorphies of chordates? Elaborate on each and make sure to use complete sentences.

2. Name the three subphyla of Phylum Chordata.
3. What group do most vertebrates fall under?
4. Why do coelocanths fascinate scientists?
5. Why is the amniotic egg an important innovation?
6. What organ does the video state allows for endothermy?
The following questions can be answered by viewing the video titled “ Vertebrate diversity: An Introduction” by Craig Savage.
7. List some characteristics observed in ADULT urochordates.
8. List the 7 classes under vertebrata:
The following can be answered by using the virtual frog dissection:
9. Why is frog skin slippery? What function does frog skin serve?
10. What is the function of the frog’s cloaca?
11. What is the largest organ in the digestive system of frogs?
12. Where in the frog’s digestive system are nutrients absorbed?
13. What blood vessels take blood away from the heart? Which blood vessels take blood to the heart? Which are the smallest blood vessels?
14. How many chambers to frog hearts have?
15. What is the function of fat bodies in frogs?
16. What are the main organs of the frogs excretory system?
17. What are the components of the frog’s nervous system?
18. What two regions make up the frog’s skeleton?

 

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