Name ________________________________________
Date ______________
The Frog Dissection Lab Record Sheet
External Observations and Analysis
1.
Describe the color of the dorsal and ventral surfaces of the frog.
2.
How is this coloration an adaptation to its habitat?
3.
Describe the position of the frog when it floats in the water
4.
What parts of the body remain above the surface when the frog is floating?
5.
How is the location of the nares an adaptation for living in water?
6.
The frog’s sense organs are located on the top of the head. How does this help the frog when it is in
the water?
7.
Is the skin of the frog smooth or rough? Moist or dry?
8.
Where is the nictitating membrane attached?
9.
Are the hind or forelegs (circle one) more important for jumping?
10.
Are the hind or forelegs (circle one) more important for landing?
11.
12.
13.
How many digits are on each of the frog’s hands?_______________
How many digits are on each of the frog’s feet? ________________
How are the frog’s feet adapted for swimming
14.
Is your frog a male or a female and give 2 ways you can tell this?
15.
Where is the tongue attached to the mouth?
16.
The frog is an insect eater. How is the frog’s tongue designed for the type of food it eats?
Internal Observations and Analysis
17.
How many lobes does the liver contain?_____________
18.
What is the shape of the stomach?
24.
25.
19.
Describe the inside wall of the stomach
20.
What, if anything, was found in the frog’s stomach?
21.
Describe the mesentery that holds the intestines.
22.
How does the length of the small intestine relate to its function in absorbing digested food?
23.
Explain why in a frog’s heart, the ventricle has a thicker wall than the two atria.
List three adaptations that permit the frog to live on land successfully.
1.
__________________________________________________
2.
__________________________________________________
3.
__________________________________________________
List three adaptations that permit the frog to live in water successfully.
1.
__________________________________________________
2.
__________________________________________________
3.
__________________________________________________
Mouthparts of the Frog
(End View)
(Surface)
(End view)
(Surface)
Digestive, Respiratory, and Circulatory Systems of the Frog A.
______________________
B.
______________________
C.
______________________
D.
______________________
E.
______________________
F.
______________________
G.
______________________
H.
______________________
I.
______________________
J.
______________________
K.
______________________
L.
______________________
M.
______________________
N.
______________________
P.
______________________
Female Frog Urogenital System
Male Frog Urogenital System