Bio I
Unit 5: Classification & Evolution
Name: ________________________________________
Cladogram #1
Cladogram practice
1. Name five characters possessed by birds.
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2. Name two characters possessed by reptiles/birds (the group comprised of turtles, lizards, snakes +
crocodiles + dinosaurs + birds; including their common ancestors).
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3. Name four characters possessed by mammals.
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4. According to the cladogram, which character evolved first: the amniote egg or hair? (circle one)
5. According to the cladogram, which character evolved first: the amniote egg or keratinized skin?
6. According to the cladogram, which character evolved first: keratinized skin or hair?
Cladogram #2
1. After which animals did mammary glands develop? ___________________________________
2. What animal does not have jaws? __________________________________________________
3. Which animals have lungs? ________________________________________________________
Cladogram #3
1. What does all life stem from according to this picture? ____________________________
2. What major group came before animals? ________________________________________
3. What group are mammals from? ________________________________________________
4. Which came first the chicken or the egg? ________________________________________
5. What is the first amniote? _____________________________________________________
6. Which animals are considered vertebrates?
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7. What organisms are non-flowering plants closely related to?
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8. What organisms are insects closely related to?
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Cladogram #4
1. List the organisms that show multicellularity. ______________________________________
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2. List any organisms that lack tissues. ______________________________________________
3. List organisms with radial symmetry.______________________________________________
4. What organisms have deuterostomic development? __________________________________
5. List organisms with a coelom (fully lines body cavity). _______________________________
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6. List protostomes organisms that have a coelom. _____________________________________
7. The derived and shared characteristics are missing from this Cladogram of vertebrates. Use
your textbook (Chapter. 26) to determine the missing characteristics and then add them to
the correct place on your Cladogram.