Exam 2 Flashcards
What phylum has an endoskeleton, move by tubed feet (water vascular system), typically have external fertilization, most are marine animals
Phylum Echinodermata (spiny skinned)
What class contains Sea Stars/Starfish: typically have a 5-pointed radial symmetry as adults (multiples of 5), free swimming larvae, feed on bivalve mollusks.
Class Asteroidea
What class contains Sand Dollars and Sea Urchins: still have tube feet for movement, 5-point radial symmetry. Sea Urchins have spines all over their body.
Class Echinoidea
What class contains Brittle Stars: can break off their arms and regenerate it later, movement by tube feet. 5-point radial symmetry.
Class Ophiuroidea
What class contains Sea Cucumbers: eat sludge at the bottom of the ocean, 5-point radial symmetry. Some have a unique defense, throwing their intestines and run.
Class Holothuroidea
What class contains Sea Lilies and Feather Stars: Crinoids are extremely common fossils. Stationary ocean animals
Class Crinoidea
What phylum includes chordates, including humans?
Phylum Chordata
What are four primary characteristics of chordates?
Have a Dorsal support rod (notochord), Gill pouches or arches (gills/lower jaws of humans), Hollow dorsal nerve chord (spinal chord), Have, at some stage, a post anal tail.
What subphylum contains Sea Squirts: only because of its larvae
Subphylum Urochordata
What subphylum contains lancelets: they are segmented marine animals that possess elongated bodies with a notochord that extends the length of the body, extending from head to tail, persisting throughout the animal’s life.
Subphylum Cephalochordata
What subphylum contains Vertebrates (Series of segments form over the nerve chord)
Subphylum Vertebrata
What group contains (Jawless Fish), Hag fish: scavengers/eat dead things, they have a mouth like a plunger, extremely slimy. Lampreys: can get 2 feet long, mouth like a plunger with teeth.
Agnatha
What class contains (Fish with skeletons of cartilage/Sharks and such)Scales are pretty much the same as their teeth structurally, sharks are the top predator in the oceans. Sting Rays are like flattened sharks
Class Chondrichthyes
What class contains (Boney Fish) Swim bladder (float), lateral line (pressure detectors), huge economic importance, certain fins that have names: front chest (pectoral), Pelvic, Anal, Dorsal, Caldo fin.
Class Osteichthyes
What class (Start in water and end up on land), reproduce in the water, most go through a metamorphosis, some keep the tails (like salamanders), have moist skin for the most part, Salamanders normally lose their fins and gills, some are still aquatic and only live in the water
Class Amphibia
Distinguish heart chambers
Fish have 2 heart chambers, Amphibians have 3 chambers, Reptiles have 3 with a slight separation, Alligators/Crocodiles/Birds/and all mammals have a full 4 chambered heart.
What class is cold blooded. First full time land vertebrates. Have hard shelled eggs. Some reptiles go to water partly.
Class Reptilia
What class has been around for over 100 million years, have been around since the Dinosaurs. Similar to Theropod dinosaurs. Some feathers are used for decorations, but flight developed well after they were developed for decorations.
Class Aves
often suggested as an intermediate between reptiles and birds, it still had small teeth and claws on its wings. Also had a long lizard like tail with feathers on it.
Archaeopteryx
Another name for warm blooded
Homeothermic
