Chapter 34C: Vertebrates Cont. Slide 80 Flashcards
Are tetrapods that have a terrestrially adapted egg
Amniotes
Are tetrapods whose living members are the reptiles (including birds) and mammals
Amniotes
Amniotes are named for the ________ _____, which contains ___ membranes that protect the embryo
Amniotic egg; 4
A key adaptation for life on land, the amniotic egg reduced dependence on ______ for reproduction
water
What are the 4 extraembryonic membranes
Amnion
Chorion
Yolk sac
Allantois
A fluid-filled sac that surrounds, bathes, and cushions the embryo
Amnion
Function in gas exchange, nutrient transfer, and waste storage
Yolk sac
Chorion
Allantois
Tuataras, lizards, snakes, turtles, crocodilians, and birds
Reptiles
Lizards and snakes
Squamates
Reptiles have scales containing _________ to protect skin from desiccation and abrasion
Keratin
Most reptiles are _________, absorbing external heat as the main source of body heat
Ectothermic
Regulate their body temperature through behavioral adaptations
Ectotherms
Birds are __________, capable of maintaining body temperature through metabolic activity
Endothermic
Earliest reptiles that resembled lizards
Diapsids
Have a pair of holes on either side of the skull through which muscle attach to the jaw
Diapsids
What are the 3 lineages of Diapsids?
Turtles
Lepidosaurs
Archosaurs
Include living tuataras, lizards, and snakes, and extinct mososaurs
Lepidosaurs
Include living crocodilians, and extinct pterosaurs and dinosaurs
Archosaurs
Bipedal carnivores (T-Rex)
Theropods
Two lineages of turtles
Side-necked
Vertical-necked
Fold their neck horizontally
Side-necked turtles
Fold their neck vertically
Vertical-necked turtles
Largest living species of turtles
Sea turtles
Lepidosaurs —> _________ (lizards and snakes)
Squamates
_______ are descendants from lizards with legs
Snakes
Snakes use _________ _______ to grip the ground at several points and pull their body up and forward
Belly scales
Birds are _________ that have evolved extensive modifications in their adaptation to flight
Archosaurs
Birds lack
Urinary bladder
How many ovary do female birds have?
One ovary
Bird feathers are made of ___-________ are arranged to form wings into _______
Beta-keratin; airfoils
Birds have ______ vision, acute eyesight, and ______ muscle control to support flight
Color; fine
What in birds benefits hunting and scavenging, escapee from terrestrial predators, and long-distance migration
Flight
What two structures in birds insulate the body, reducing heat loss
Feathers and layer of fat
Fertilization in birds is
Internal
The clade that includes the 28 orders of living birds
Neornithes
Order of flightless birds including the ostrich, rhea, kiwi, cassowary, and emu
Ratites
Are amniotes that have hair and produce milk
Mammals
What structure in mammals produce milk to feed young
Mammary glands
In mammals, these two structures allow for insulation
Hair
Fat layer under the skin
In mammals, conserve water from wastes
Kidneys
In mammals, structure used for shearing, crushing or grinding
Teeth
Mammals in arid environments, structure that limits evaporative water loss
Thick oily skin
Mammals in arid environments, structure that increase efficiency of water reabsorption when exhaling
Large nasal passages
Mammals in arid environments, two structures that absorb most of the water from food, losing little in feces and urine
Large intestine
Kidneys
Amniotes that include mammals
Synapsids
All synapsids are distinguished by a single ___________ ___________ (hole behind each eye socket)
Temporal fenestra
Egg-laying mammals
Monotremes
Mammals with a pouch
Marsupials
Placental mammals
Eutherians
Are a small group of egg-laying mammals
Monotremes
Include 4 species of echidnas and one species of platypus
Monotremes
In Monotremes, females lack _______ and secrete milk from ________ on their bellies; babies suck milk from their _______
Nipples; glands; fur
Nipples to provide milk
Birth of live young
Embryonic development in the uterus
A placenta for nutrient transfer
Marsupials
Are born early and continue to develop while nursing in pouch called the ___________
Marsupials; marsupium
Compared with marsupials, ___________ have a more complex ________ and longer ______________
Eutherians; placenta; pregnancies
The mammalian order that includes lemurs, tarsiers, monkeys and apes
Primates
_________ are members of the ape group
Humans