The Animal Kingdom
Animals are all _____________ and _____________ (get their nutrients from another source).
Multicellular, Heterotrophic
What are animals that do not have a backbone called?
Invertebrates
___________ is a hard outer body covering.
Exoskeleton
The _________ is a structure that helps bone and cartilage grow.
Notochord
What is an organism in its early stages of development?
Embryo
What is the set of all chemical reactions that maintain an organism's life?
Metabolism
______________ produce both sperm and eggs.
Hermaphrodites
Aquatic is water-based and ___________is land-based
Terrestrial
What is the hollow supporting structure that runs along the dorsal side of an animal?
Nerve cord
__________ are made up of fish and _________ species.
Anamniotes, amphibian
The tendency of an organism to be internally stable is called ___________.
Homeostasis
Cnidocytes inject ______ into their prey.
toxins
The _______ contains the stomach and intestines while the ______ contains the heart and lungs.
Abdomen, Thorax
In fish, _________ _____ support the gills.
Pharyngeal slits
_______ are made up of ________, birds, and _______.
Amniotes, reptiles, mammals
__________ is the ability to move from one place to another.
Locomotion
__________ eat meat, __________ eat plants, and _________ can eat plants and/or meat
Carnivores, Herbivores, Omnivores
What is the process in which an organism passes through three or four distinct life phases?
Metamorphosis
Tunicates make up a group of ____ different species that attach themselves to a rigid object.
2,000
Reptiles have scales made of a tough protein called _______.
Keratin
_________ is the process of adaptation that causes changes in the characteristics of a species over several generations.
Evolution
___________ and ___________ are two classes of mollusks that don't have shells.
Cephalopods, Aplacophora
_______ are the most numerous of the arthropods and are called _____ when they are young and immature.
Insects, Larva
There are _____ classes of vertebrates.
seven
_______ have an advanced _________, which is a thin muscle that expands and contracts the lungs and separates them from the stomach and intestines.
Mammals, Diaphragm