Ch. 24 Animals 2: The Chordates

Front 1

Vertebrate whose egg has waterproof membranes that allow it to develop away from water; a reptile, bird or mammal.

Back 1

Amniote

Front 2

Animal with an embryo that has a notochord, dorsal nerve chord, pharyngeal slits, and a post-anal tail.

Back 2

Chordate

Hint 2

Example: a lancelet or a vertebrate

Front 3

Internal skeleton made up of hardened components such as bones.

Back 3

Endoskeleton

Front 4

Invertebrate chordate that has a fishlike shape and retains the defining chordate traits into adulthood.

Back 4

Lancelet

Front 5

Stiff rod of connective tissue that runs the length of the body in chordate larvae or embryos.

Back 5

Notochord

Front 6

Vertebrate with four legs, or a descendant thereof.

Back 6

Tetrapod

Front 7

Invertebrate chordate that loses most of its defining chordate traits during the transition to adulthood.

Back 7

Tunicate

Front 8

Animal with a backbone

Back 8

Vertebrate

Front 9

Jawed fish with a skeleton of cartilage, uncovered gills, and interconnected network of sensory cells.

Back 9

Cartilaginous fish (Class Chondrichthyes)

Hint 9

Example: A shark, ray, or skate.

Front 10

Body opening that serves as the exit for digestive waste and urine; also functions in reproduction.

Back 10

Cloaca

Front 11

Fish with a skeleton of cartilage, no fins or jaws

Back 11

Jawless fish (Class Agnatha)

Hint 11

Example: a lamprey or hagfish

Front 12

Jawed fish with fleshy fins that contain Bones. Have a swim bladder and covered gills (by operculum)

Back 12

Lobe-finned fish (Class Osteichthyes)

Hint 12

Example: a coelacanth or lungfish

Front 13

Jawed fish with fins supported by thin rays derived from skin; member of most diverse lineage of fishes.

Back 13

Ray-finned fish (class osteichthyes)

Hint 13

Also contains swim bladder and operculum.

Front 14

Tetra pod with scaleless skin; it typically develops in water, then lives on land as a carnivore with lungs.

Back 14

Amphibian (Class Amphibia)

Hint 14

Example: a frog or salamander

Front 15

Group of reptiles that include the ancestors of birds; became extinct at the end of the cretaceous.

Back 15

Dinosaur

Front 16

Animals whose body temperature varies with that of its environment.

Back 16

Ectotherm

Front 17

Animal that maintains its temperature by adjusting it's production of metabolic heat.

Back 17

Endotherm

Hint 17

Example: a bird or mammal

Front 18

Amniote subgroup that includes lizards, snakes, turtles, crocodilians, and birds.

Back 18

Reptile (Class Reptilia)

Front 19

Feathered reptile with a body adapted for flight.

Back 19

Bird

Front 20

Animal with hair or fur; females secrete milk from mammary glands.

Back 20

Mammal (class mammalia)

Front 21

Mammal in which young are born at an early stage and complete development in a pouch on the mother's surface.

Back 21

Marsupial

Front 22

Egg-laying mammal

Back 22

Monotreme

Front 23

Mammal in which maternal and embryonic bloodstreams exchange materials by means of a placenta.

Back 23

Placental Mammal (Eutherian)

Hint 23

Long pregnancy-embryo completely develops inside mother.

Front 24

Humanlike primate; monkey, ape or human.

Back 24

Anthropoid Primate

Front 25

Common name for a tailess nonhuman primate; a gibbon, orangutan, gorilla, chimpanzee, or bonobo.

Back 25

Ape

Front 26

Mammal having grasping hands with nails and a body adapted to climbing.

Back 26

Primate

Hint 26

Example: A lemur, monkey, ape, or human.

Front 27

Habitual upright walking

Back 27

Bipedalism

Front 28

Human or an extinct primate species more closely related to humans than to any other primates.

Back 28

Hominin

Front 29

Extinct African hominins in the genus Australopithecus; some are considered likely human ancestors.

Back 29

Australopith

Front 30

Extinct hominin that arose about 1.8 million years ago in East Africa; migrated out of Africa.

Back 30

Homo Erectus

Front 31

Extinct hominin; earliest named Homo species; known only from Africa, where it arose 2.3 million years ago.

Back 31

Homo Habilis

Front 32

Extinct hominin; closest known relative of H. Sapiens; lived in Africa, Europe, Asia.

Back 32

Homo Neanderthalensis

Front 33

Of placental mammals, organ that forms during pregnancy and allows diffusion of substances between the maternal and embryonic bloodstreams.

Back 33

Placenta