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Janssen Gr 7 Animals

Mrs. Janssen's Grade 7 Animals Test

Keeping internal body conditions stable. homeostasis
Structures and functions that allow animals to perform their functions. adaptations
Animals that have a backbone. vertebrates
Animals that do not have a backbone. invertebrates
A group of similar cells that perform a specific function. tissue
The smallest unit of living things. cell
A group of tissues that perform a specific function. organ
A group of organs. organ system
A type of symmetry in which lines can be drawn from a central point to the outside border. radial
A type of symmetry in which one line can be drawn down the center, dividing the organism into two mirror images. bilateral
Not having any symmetry at all. asymmetry
Invertebrates that have stinging cells and take in food through a central cavity. cnidarians
An invertebrate that has no shape, no organs, and absorbs food. sponge
A worm whose body is divided into many linked sections. segmented
A worm who body is shaped like a long, thin tube. round
A worm who body is flat and soft. flat
Invertebrates whose soft bodies are protected by a shell. mollusk
Invertebrates who have hard outer coverings, segmented bodies, and pairs of jointed appendages. arthropods
Hard outer covering. exoskeleton
Bones that are inside the body. endoskeleton
Invertebrate that has an internal skeleton and a system of fluid filled tubes. echinoderm
Animals that have a notochord, nerve cord, and throat pouches. chordates
Flexible rod that supports a chordate's back. notochord
A bundle of nerves that connects the brain to the nerves in other parts of the body. nerve cord
An animal that cannot control its body heat and must depend on its environment for heat. ectotherm
An animal that controls its own temperature and produces its own body heat. endotherm
A vertebrate that lives in water and uses fins to move. fish
A tissue more flexible than bone. cartilage
Fish that have endoskeletons. bony
Fish that do not have a jaw. jawless
Fish that have no bones. cartilagenous
Vertebrate that is ectothermic, spends its early life in water, and lives on land during its adult life. amphibian
Ectothermic vertebrate that has scaly skin and lays eggs on land. reptile
Endothermic vertebrate that lays eggs, has feathers, and flies. bird
Endothermic vertebrates that have skin covered with fur or hair and a four chambered heart. mammals
Organs that produce milk. mammary glands
Mammals that lay eggs. monotremes
Mammals whose young develop in a pouch. marsupials
Mammal that develops inside its mother's body. placental mammal
Organ that exchanges materials between the mother and the embryo. placenta
Created by: jjanssen33