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ALTERNATE FROG DISSECTION WORKSHEET Flipbook PDF
FROG VIDEOS WORKSHEET p. 2 7. CLUSTERING AND OTHER INTERACTIONS a. Why would the frogs/toads cluster in groups? b. What
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ALTERNATE FROG DISSECTION WORKSHEET NAME_______________________________________________ PERIOD____ QUESTION: WHY ARE YOU CHOOSING TO DO THE ALTERNATE FROG DISSECTION?
Part 1
Go To: http://www.californiaherps.com/behavior/frogbehavior.html
There are many videos, just click on the thumbnail pictures and wait for the video to start. There is not sound on most, so be observant. Answer the questions below. 1. LIFE CYCLE OF THE FROG a. Describe the mating process
b. How are the eggs fertilized (internally or externally, on land/in water, connected/alone, etc)
c. Describe the tadpole appearance. How do they move?
d. Why do you think it is necessary to lay so many eggs?
e. Why do you think the hind legs are so much larger than the forelimbs?
2. FEEDING BEHAVIOROF THE FROG/TOAD a. What do frogs and toads eat? (Be sure to look all the way down the page.)
b. Where is the tongue attached? What is its purpose in food-gathering?
c. What do tadpoles eat?
d. Describe how the frogs or toads move to capture their prey.
FROG VIDEOS WORKSHEET p. 2 3. FROG AND TOAD MOVEMENT a. Describe how frogs crawl.
b. Describe how frogs hop.
c. Describe how frogs swim.
d. What other movements does a frog or tadpole do? 4. FROG AND TOAD SOUNDS a. When (time of year and time of day) and why do frogs have mating calls?
b. How does the frog’s body change when it makes the sound? c. Draw how the frog looks when it makes the call:
5. MATING a. How are the frogs positioned during mating? What is this behavior called? b. How does the male hold onto the female during the deposit of his sperm? c. Do you think the fertilization is internal or external? What makes you think so? d. What are some of the unusual mating behaviors shown here?
6. CAMOUFLAGE a. Name the frog/toad and how it’s camouflage is working.
FROG VIDEOS WORKSHEET p. 2 7. CLUSTERING AND OTHER INTERACTIONS a. Why would the frogs/toads cluster in groups? b. What does this clustering look like?
8. TOE PADS FOR CLIMBING a. What special structures are on their feet? What is the purpose?
b. What type of animals eat frogs?
9. MISCELLANEOUS FROG AND TOAD OBSERVATIONS a. List three facts about frogs that you have not listed yet.
PART 2 GO TO NET FROG DISSECTION: http://frog.edschool.virginia.edu/Frog2/Dissection/Setup/setup1.html Make at least 10 things you learned about dissection or the frog anatomy: