Name: ______Class:______Date:______

Observations – Label ALL Parts of the Frog

External Anatomy of the Frog – External Anatomy #7

Mouthparts of the Frog – External Anatomy #12

Digestive system and other Parts of the Frog – Digestive System #3

Urogenital System of the Frog – Urogenital System #4

The Frog Heart – Circulatory System #3

Questions: Use your knowledge of frogs to answer the questions below.

  1. Describe how the eyes of a frog close. ______

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  1. Describe the movements of the sides of the frog’s body during breathing. ______

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  1. Describe how a frog jumps. ______

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  1. a. Are the hind legs or the forelegs more important in jumping? ______

b. Are the hind legs or the forelegs more important in landing? ______

  1. Is the skin of the frog smooth or rough? Moist or dry? ______

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  1. Describe the color of the dorsal and ventral surfaces of the frog. ______

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  1. How many digits are on each of the frog’s hands? ______
  2. How many digits are on each of the frog’s feet? ______
  3. Is your frog male or female? How can you tell? ______
  4. Where is the tongue attached to the mouth? ______
  5. How many lobes does the liver contain? ______
  6. Describe the mesentery that holds the intestines. ______

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  1. Describe the general shape, or plan, of the frog’s digestive system. ______

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  1. Describe the inside wall of the stomach. ______

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  1. Describe the contents of the frog’s stomach. ______

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  1. What happens when the air is pumped into the lungs? ______

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  1. Compare the walls of the two atria and the ventricle. ______

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  1. Describe the movement of the leg muscles as the leg is bent and straightened. ______

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Analysis and Conclusions

1. How are the feet of a frog adapted for swimming? ______

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2. How is the coloration of the frog an adaptation to its habitat? ______

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3. How is the location of the nares an adaptation to living in water? ______

4. The tip of the tongue in a live frog is sticky. What would be the advantage of this? ______

5. How does the length of the small intestine relate to its function in absorbing digested food?

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6. Explain why in a frog’s heart the ventricle has a thicker wall than the atrium. ______

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Critical Thinking and Application

1.  Frogs are insect eaters. How is the frogs tongue designed for the type of food it eats?

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2.  List three adaptations that permit the frog to live on land successfully. ______

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3.  List three adaptations that permit the frog to live in water successfully. ______

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4.  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? ______

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