Fish
Fish use this appendage (limb) to propel themselves in the water.
What are "fins"?
Amphibians are able to breathe through their smooth ____.
What is "skin"?
Most reptiles have four, but snakes have none.
What are "limbs"?
Birds have this instead of teeth.
What is a "beak"?
Mammals are ____, meaning they produce their own heat.
What is "endothermic"?
Fish reproduce this way.
What is "sexually"?
This group of amphibians includes those that do NOT have a tail.
What are "anurans"?
Reptiles' body temperature depends on external factors. This means they are ____ vertebrates.
What is "ectothermic"?
Birds' bodies are ____, which means they're adapted for flying.
What is "aerodynamic"?
Mammals use this to breathe.
What are "lungs"?
Most fish have this organ, which helps them float.
What is a "swim bladder"?
Salamanders and newts belong to this group of amphibians.
What are "urodela"?
Iguanas and geckos belong to this group.
What are "lizards"?
Birds use this region of their digestive system to break up food.
What is a "gizzard"?
This is a pocket of skin on the stomach of some female marsupials.
What is a "pouch"?
The operculum protects this part of bony fish.
What are "gills"?
Baby amphibians turn into adults through this process.
What is "metamorphosis"?
This is the shape of the teeth of crocodiles and alligators.
What is "conical"?
Birds' bodies are covered in ____, but their legs are covered in ____.
What are "feathers" and "scales"?
Platypus and echidna belong to this group.
What are "monotremes"?
The caudal fin of cartilaginous fish is ____, meaning it has uneven lobes.
What is "heterocercal"?
Larvae develop ____ and ____ in order to live out of water.
What are "limbs" and "lungs"?
Cryptodira use this feature of their body to protect themselves.
What is a "shell"?
What is "incubation"?
This characteristic is unique to humans and allows us to hold and manipulate objects.
What are "opposable thumbs"?