Save Status:
or to save your progress. The page will not refresh.
Controls:
SPACEBAR SWITCHES TYPING DIRECTION
Answer Key:
Edit a Copy:
Make Your Own:
Crossword Word Search Worksheet
Rate This Puzzle:
Log in or sign up to rate this puzzle.

Amphibians, Reptiles, Fish and Birds

Teacher: Snickerfritz
Across
The distinguishing feature that makes a bird a bird.
A type of down feather on water birds that releases a water-proofing substance
Region of the brain that coordinates body movements
A muscular cavity at the end of the large intestine through which digestive wastes, urine, and eggs or sperm leave the body
What reptiles have and amphibians do not
A flightless bird that must move by running
Land reptiles convert this into a compound called uric acid
A reptile found only in New Zealand that resembles a lizard but doesn't have external ears, and has a third eye
Describes animals whose eggs hatch inside the body and the young are later born alive
The immature stage of an organism that looks different from the adult form
Aquatic animals use these to propel or guide themselves through the water
The type of waste removed from the blood by the kidneys, converted to uric acid, and deposited in the cloaca
A type of jawless fish that has a circular sucking disk with which it attaches to other fish
A member of the order Testudines that lives in the water
The type of feather that traps air close to a bird's body to keep it warm
A long supporting rod that runs through the body just below the nerve cord in embryonic chordates
An internal gas-filled organ in some bony fishes that helps it to adjust its buoyancy
The wing feathers of a bird that are used for flight
Down
A reptile is a vertebrate that has dry, _______ skin
Members of the a subphyla of Chordata that don't have a backbone and get their name from a piece of clothing
A type of throat pouch that in fishes and amphibians, connects the to the outside of the body
In turtles and tortoises, it it the dorsal part of the shell
A membrane that regulates the transport of oxygen from the surface of the egg to the embryo and the transport of carbon dioxide in the opposite direction
Describes animals who bear live young
Term that describes fish who spend most of their lives in the ocean but migrate to fresh water to breed
An animal that relies on interactions with the environment to help it control body temperature
Describes animals whose eggs hatch outside of the body
Members of the class Chondricthyes have this type of skeleton
Stores the waste produced by the embryo. later fuses with the chorion and serves as a respiratory organ
A movable membrane inside the eye of an amphibian that protects and keeps moist the eye.
The ventral part of a turtle or tortoise's shell
Animals that have a backbone
An animal that generates its own body heat and controls its body temperature from within
A reptile that has legs, clawed toes, external ears and movable eyelids
A part of the digestive system in birds and worms in which food can be stored
All reptiles reproduce by ______ fertilization
The type of feather that provides the lifting force and balance needed for flight
A fluid -filled sac that surrounds and cushions the developing embryo.
The upper chamber of the heart that receives and holds blood that is about to enter the ventricle