Ch. 35 Flashcards
What do you call a chordate with a backbone?
Vertebrates
What do you call jawless fishes?
Cyclostomata
What do you call fishes with jaws?
Gnathostomes
What do you call gnathostomes with four limbs?
Tetrapods
What do you call tetrapods with desiccation-resistant egg?
Amniotes
Vertebrates are distinguished by having what chordate features?
-Vertebral Column
-Cranium
-Endoskeleton of cartilage and bone
What do you call milk producing amniotes?
Mammals
What is an example of a cyclostomata?
Lamphreys and hagfish
What is an example of chondricthyes?
Sharks and rays
What group has cartilaginous skeletons, teeth not fused to jaw, well developed fins, no swim bladder, internal fertilization, and single blood circulation?
Chondricthyes
What group has ossified skeletons, single gill opening covered by operculum, fin muscles within body, and a swim bladder?
Actinopterygii
What is an example of actinopterygii
Ray finned fishes
What group has ossified skeletons, bony extensions, muscles, and projectoral and pelvic fins?
Sarcopterygii
What is an example of sarcopterygii
lungfished and lobbed fishes
What group has adults able to live on land, fresh water needed for reproduction, metamorphosis, double circulation and lungs?
Amphibia
What are examples of amphibia?
Frogs, toads, salamanders
What clade has an encased body in a hard shell, no teeth, head and neck retraction into shell, and eggs laid on land?
Testudines
What is an example of a testudine?
Turtles
What clade has a lower jaw not attached to its skull and skin covered in scales?
Squamata
What is an example of squamata?
Lizards and snakes
What clade has a four chambered heart, large aquatic predators, parental care of young?
Crocodilia
What is an example of crocodilia?
Crocodiles and alligators
What clade has feathers, hollow bones, air sacs, reduced internal organs, endothermic, and a four chambered heart?
Aves
What are examples of aves?
Birds
What clade has hair, mammary glands, specialized teeth, enlarged skulls, external ears, endothermic, four chambered heart, highly developed brains, diversity of body forms?
Mammalia
What are examples of mammalia?
Mammals- rats, humans, chimps
Hagfish produce copious amounts of _______ for _______
Slime, defense
Lamphreys had what economic impact?
Invaded the Michigan lakes
Lamphreys are _____ as adults
Parasitic
Is the cartilage skeleton of chondricthyes a ancestral character?
NO
How do sharks maintain buoyancy?
Large oil filled liver
Chondrichthyes have how many heart chambers and what kind of circulation?
2, single
What character on a fish detects pressure waves?
Lateral line
What type of internal fertilization lays eggs?
Oviparous
What type of internal fertilization has eggs retained in females but no placenta?
Ovoviparous
What type of internal fertilization has eggs develop in uterus and placenta nourishes young?
Viviparous
Osteichthyans have skeletons made of _______
Bone
What covers the gills
Operculum
What does a swim bladder do?
Maintain buoyancy
Actinopterygii has fins supported by what?
Thin, bony, flexible rays
Lungfish live in oxygen poor freshwater, have both gills and lungs, and have muscular lobe fins to go on land, what is their name?
Dipnoi
What is the ancesteral fishapod called?
Tiktaalik rosae
Amphibians have lungs adapted to a semiterrestrial lifestyle, what kind of breathing do they do?
Buccal pumping
Amphibians have how many heart chambers?
3 chambered
Amphibians undergo what change?
Metamorphosis
What groups have amniotes?
Birds, reptiles, most mammals
How come amniotes are dessication resistant?
The shell contains keratin
What is it called in amniotes when negative pressure sucks in air for breathing?
Thoracic breathing
What do amniote kidneys do?
Water conservation
Amniotes have what kind of fertilization?
Internal fertilization
What the similarities between birds and reptiles?
-Nest
-Scales
-4 chambered heart
-Care for young
Testudines have what fused with their shell
Ribs
What are testudines?
Turtles
What are squamata?
Lizards and snakes
Squamata have what unique character about their skulls?
Kinetic skulls
Crocodilia contains what animals?
Crocodiles and alligators
What are aves?
Birds
What are the notable characters of aves?
- Feathers
- Air sacs
- Reduction of organs: one ovary, no bladder, no teeth
- Lightweight skeleton with thin hollow bones
Are aves endothermic?
Yes
What are milk producing amniote group called?
Mammals
What are distinguishing characteristics of mammals?
- Mammary glands
- Hair
- Specialized teeth
- Enlarged skulls for brain, 3 inner ear bones, external ears
Horns in mammals are made of what?
Keratin
Antlers in mammals are made of what?
Bone
What are monotremes?
Echidnas and platypus
What is clade metatheria?
Marsupials
What are eutherians?
Plancental mammals
What are examples of eutherians?
Afrotheria- elephants, manatees
Xenartha- armadillos, anteaters, sloths
Euarchontoglires- primates, rodents
Laurasiatheria- whales, bats