Animal Characteristics
The type of body covering that reptiles and fish have.
What are scales?
There are about this many species of mammals.
What is 5,000?
Crabs, shrimp, and lobster are classified as this group of invertebrates.
What are crustaceans?
The stomach and intestines are part of this organ system.
What is the digestive system?
An animal that has a backbone.
What is a vertebrate?
Cells become multicellular through this process.
What is mitosis?
The skull, backbone, and limb bones are part of this.
What is the endoskeleton?
Butterflies, bees, and ants are this group of invertebrate animals.
What are insects?
This system consists of arteries, veins, and the heart.
What is the circulatory system?
Growth that causes something to grow bigger, more mature, or more advanced.
What is development?
These types of cells form tissues that work together to perform a specific function.
What are specialized cells?
More than half of vertebrate species are this.
What are fish?
Snails, clams, and oysters are this group of invertebrates.
What are mollusks?
This system contains organs that take in oxygen from the air.
What is the respiratory system?
An animal that does not have a backbone.
What is an inverterbrate?
Animals eat food from plants and animals in order to get this.
What is energy?
What is parental care?
This percentage of animals on earth are invertebrates.
What is 98%
The system includes the brain, which is the control center of the body.
What is the nervous system?
This term comes from words meaning inner and heat.
What are endotherms?
Animals who rely on external temperature to maintain control of their body temperature are called this.
What is an ectotherm?
This organ in mammals transfers waste and nutrients between the mother and her developing offspring.
What is the placenta?
This group is the most diverse group in the animal kingdom.
What are arthropods?
Meiosis creates sperm and egg cells (gametes) in this system.
What is the reproductive system?
A process in the life cycle of many animals during which a rapid change from immature organism to adult takes place.
What is metamorphosis?