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Terms in this set (52)
hollow nerve cord
hollow structure that runs along the dorsal (back) part of the body
some chordates, such as fishes and amphibians, gills develop from _____ ______
long supporting rod in chordates
How do lancelets and tunicates differ form most chordates?
What chordate characteristic is not displayed in most adult chordates?
Fishes are chracterized by ____, which are used for movement, ____, which are used for gas exchange, and ____ which are used for protection.
fins, gills, scales
2 important developments in the rise of early fishes
evolution of jaws and evoluiton of paired fins
In their modes of feeding, fishes are classified as ___,___,___,___, and ___.
herbivores, carnivores, parasites, filter feeders, and detitus feeders.
Several types of fishes hace speacialized organs that function as _____ to help them breathe out water.
shark: jawless, cartilagionous, or bony
lamprey: jawless, cartilagiouns, or bony
lungfish: jawless, cartilaginous, or bony
fishes whose eggs hatch outside the mothers body
the embryos stay in the mother's body after internal fertilization
What actions can jawed fished perform the jawless fished are unable to do?
As larva, most amphibians live in (water/land)
Most adult amphibians breathe with (gills/lungs)
Amphibians have (moist/dry) skin
Most amphibians (have/lack) scales and claws
3 adaptations that enable amphibians to live on land
(1)bones in limbs (2) lungs and breathing tubes (3) sternum, or breastbone forms a shield to protect internal organs
have fishlike scales on their skin and are LEGLESS animals that feed on termites
known for jumping ability
classified as a carnivore, has long bodies and tails
three-chambered amphibian heart process
Oxygen poor blood circulates form the body into the right atrium. At the same time oxygen-rich blood from thr lungs and skin enters the left atrium.
thick-walled, muscular chamber that is the actual pumping portion of the heart
portion of the brain that coordinates body movement
In vertebrates, the part of the breain called the ____ controls voluntary activities.
The sensitive receptor in most fishes that detects gentle currents and vibrations in water is called the _____.
gas-filled organ that helps adjust the buoyancy of many bony fishes
structure at the end of the large intestine through which wastes are expelled in a frog
the protection of frogs' eyes
Amphibians hear through ____ that are located on each side of the head.
characteristics shared by all reptiles
vertebrate, dry, scaly skin, lungs and terrestrial eggs
produces a protected, watery environment that surrounds and cushions the embryo
regulates the transport of oxygen and carbon dioxide
contains the nutrient-rich food supply for the embryo
stores waste produced by the embryo
have shells built into their skeletons
have long, broad snouts and a squat appearance
have clawed toes, external ears, and movable eyelids
are found only on a few islands new New Zealand
animals that can generate their own body heat
animals that rely on behavior to control body temperatures
dorsal(back) part of a turtle shell
ventral(font) part of a turtle shell
digestive structure that grinds and crushes food
digestive stucture that stores and moistens food
Birds have ____ body temperatures
feathers provide birds with the lifting force and balance needed for flight
feathers provide birds with insulation
birds have a ____-chambered heart