Katz
Name
Date
Pd
Frog Dissection Pre-lab
You will have to read thoroughly to find the answers
1.
2.
3.
4.
Kingdom __animalia____________
Phylum__chordata__________________
SubPhylum _vertebrata_______________
Class _amphibia_______________
5. Why are frogs said to have “two lives?”
6. How are amphibians different from reptiles?
7. What are 3 adaptations that frogs have that make them amphibians?
8. List the ways in which tadpoles (immature frogs) and frogs differ from each other.?
9.
Frog lungs are poorly developed. How does this relate to their skin being thin and
moist?
10. Frogs reproduce sexually. Why do frogs require water to reproduce – hint: motility of
sperm and external fertilization?
11. What is the purpose of the nictitating membrane?
12. What is the purpose of the tympanic membrane?
13. How/ Why do frogs retract their eyes?
14. The frog’s tongue is anchored in the very front – opposite to the orientation and
anchoring of humans. Why do you think this is so? Remove it
15. Describe the structure of a frog’s heart. How many chambers compared to our human
heart
Katz
Name
Date
Pd
Instructions for following page:
Use your glossary to find the functions of the following organs.
***Please label the structures and functions. You may color code if it helps.
Measure your frog in centimeters:________________Male or female_________
A. Esophogus (yellow)_____________________________
___________________________________________
C. Stomach (purple)________________________________
___________________________________________
D. Pancreas (orange)_______________________________
____________________________________________
F. Cloaca (black)__________________________________
___________________________________________
H. Lung (dark blue)___________________________________
___________________________________________
I. Heart (red)__________________________________
__________________________________________
J. Liver (brown)__________________________________
___________________________________________
K. Gallbladder (lt. green)_______________________________
___________________________________________
L. Small Intestine (Dark green)___________________________
_____________________________________________
M. Large Intestine (lt. blue)_______________________