Grade 8 Frog Dissection Worksheet
A comprehensive worksheet for 8th-grade science students covering frog external and internal anatomy, dissection procedures, and biological functions.
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Grade 8 Frog Dissection Worksheet
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Date:
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Carefully read all instructions and questions before answering. Use complete sentences where appropriate. Refer to your dissection guide and observations as needed.
1. Which of the following is NOT a primary external feature of a frog?
Nictitating membrane
Tympanic membrane
Gills
Webbed feet
2. Observe the image of the frog below. Which letter points to the tympanic membrane?
A
B
C
D
3. The frog's tongue is attached to the front of its mouth, allowing it to extend a great distance to catch prey. This is an adaptation for its lifestyle.
4. The large organ responsible for detoxifying harmful substances and producing bile in the frog is the .
5. Small, finger-like projections found in the small intestine that increase surface area for nutrient absorption are called .
6. Describe the initial incision you would make to open the frog's abdominal cavity for dissection. Include the direction and approximate location.
7. Upon opening the abdominal cavity, you notice a yellowish, finger-like structure. What is this structure, and what is its primary function?
Match each internal organ with its primary function.
8. Stomach
a. Stores bile
9. Small Intestine
b. Digestion of food
10. Gallbladder
c. Nutrient absorption
11. Lungs
d. Gas exchange
12. Frogs have a three-chambered heart.
True
False
13. The cloaca is the common exit point for digestive, urinary, and reproductive systems in a frog.
True
False