These organs allow fish to extract dissolved oxygen from water
What are gills?
The biological process of transformation from a larva (tadpole) into an adult.
What is metamorphosis?
Reptiles are "ectothermic." This means they cannot do this.
What does it mean to regulate your own body temperature (or produce internal heat)?
It is covered in feathers.
What covers the bodies of birds?
Because it nourish their young with milk.
Why is an animal sorted (classified) as mammal?
This flexible gas-filled organ helps bony fish control their buoyancy without wasting energy.
What is the swim bladder?
The type of gas exchange (breathing) the amphibians do, besides using their small lungs.
What is the cutaneous respiration?
A type of reproduction of some reptiles, like vipers, that keep the eggs inside their body until they hatch, so the young are born "live".
What is ovoviviparous?
Yes, they can because they are homeotherms.
Can birds regulate their temperature?
A small group of mammals that lay eggs.
What are monotremes?
This sensory system consists of a line of pores that detects vibrations and pressure changes in the water.
What is the lateral line?
This is the name of the group of amphibians that keep their tail as adults, such as newts and salamanders.
What are Urodeles?
Unlike amphibians, reptile skin is covered with these structures made of keratin.
What are scales?
Because they reduce their weight for flight.
Why birds have hollow bones?
Mammals give birth to underdeveloped young that must finish growing inside a pouch.
What are marsupials?
Fish whose skeleton is not made of bone, such as sharks and rays.
What are cartilaginous fish?
A layer that amphibian eggs lack, forcing them to lay them in water
What is a shell?
The order of reptiles characterised by having a hard shell protecting their body.
What are Chelonians?
It has different shapes according to the feeding.
What is the shape of the beak related to?
Fur.
What covers the bodies of mammals?
This bony flap covers and protects the gills in bony fish, and it opens and closes to help pump water over them.
What is the operculum?
Adult amphibians have a circulatory system with a heart that has this structure.
What group has three heart chambers (two atria and one ventricle)?
Most reptiles have this type of fertilization, which takes place inside the female's body and is an advantage for living on dry land.
What is internal fertilization?
They sit on them.
What do they do to keep their eggs warm?They sit on them.
The placenta.
What organ connects the calf with the mother?