21. Which of the following amphibians has permeable skin that allows them to breathe through it?
a) Frogs
b) Toads
c) Salamanders
d) All of the above
Answer: d) All of the above
22. The study of amphibians is called:
a) Herpetology
b) Ichthyology
c) Entomology
d) Ornithology
Answer: a) Herpetology
23. Which of the following is not a threat to amphibians?
a) Habitat loss
c) Pollution
d) Over-hunting
Answer: d) Over-hunting
24. In what way do amphibians contribute to the ecosystem?
a) They act as pollinators
b) They control insect populations
c) They provide food for other animals
d) All of the above
Answer: d) All of the above
25. Which of the following is the smallest amphibian?
a) Tadpole
b) Red-eyed tree frog
c) Paedophryne amauensis (the world’s smallest frog)
d) Axolotl
Answer: c) Paedophryne amauensis (the world’s smallest frog)
