Reptiles Flashcards
first group of animals that is ______________________
entirely adapted to life on land
more __________ than amphibians
widespread
major evolutionary advancement of the reptiles
development of the amniotic egg
amniotic egg is developed through
internal fertilization
what are the membranes the embryo of amniotic egg is surrounded by?
amnion, allantois, chorion and yolk sac
amniotic egg is covered with _______________
mineralized shell
Amnion function
protects embryo in amniotic cavity
Allantois function
disposal of wastes
Chorion
with allantois for gas exchange
___________ was used to refer to the members of the Classes Reptilia, Aves, and Mammalia
amniotes
Representatives of Order Chelonia
turtles and tortoises
Representatives of Order Crocodilia
crocodiles, alligators
Representatives of Order Squamata
snakes and lizards
Representatives of Order Rhynchocephalia
tuataras
Reptiles are __________ (AKA _______ blooded) because ___________
Ectothermic
Cold blooded
Their bodies cannot regulate temperatures internally, so their temperature is not constant and varies according to their environment
skin with _______ of __________ made from __________ that helps in preventing ___________ and _______________
scales
epidermal origin
keratin
water loss
slows down dehydration rates
___________ resistant skin
Desiccation
presence of ________ on ends of digits
claws
Developed long ______ with the presence of _____________
neck
cervical vertebrae
_______________ articulate with 2 sacral vertebrae
Pelvic girdle
Paired limbs usually with ___ toes
5
internal fertilization made possible by a __________
copulatory organ
Reptiles mode of reproduction
oviparous, viviparous and ovoviviparous
Reptiles lack __________
larval stage
most have ____________heart except for ___________ with a functional ____________heart
3-chambered
crocodilians
4-chambered
Respiratory organ
lungs
absence of gills, and inability to breathe thru the skin
__________ breathing which employs ______________ mechanism
Thoracic breathing
negative pressure mechanism
classified: presence or absence of temporal openings
Synapsid type = ____________
mammal-like reptiles
classified: presence or absence of temporal openings
___________ = stem reptiles & turtles
Anapsid type
classified: presence or absence of temporal openings
Diapsid type = _____________
rhynchocephalians, lizards, & snakes
classified: presence or absence of temporal openings
______________ = extinct plesiosaurs
____________________ are large holes in the side of the skull. and its function is to ___________
Temporal fenestra
allow muscles to expand and lengthen
greater bulk of muscles results in a ______________
stronger jaw musculature
___________________ allow an increase in the gape
longer muscle fibers
Type of skull that Order Cotylosauria and Order Chelonia have?
Anapsida
Anapsida is identified by _____________ to which ______________ are fused
bony dermal plates
ribs and trunk vertebrae
Type of skull that Order Rhynchocephalia and Order Squamata
Lepidosauria
Anapsida:
1. __________
2. __________
Absence of temporal arch
No temporal opening
Lepidosauria are with _____________ and _______________
2 temporal fossae
powerful jaw suspension
Archosauria are with ____________ and lineage to give rise to the __________
2 temporal arches
birds
Type of skull order crocodilian have
Archosauria
Type of skull Plesiosaur have
Euryapsida
Euryapsida are with _________________
modification of the _____________
single dorsal temporal fossae
diapsid
order of Cuora amboinensis
Order Chelonia
order of most recent reptiles
Order Squamata
Suborder Lacertilia have ___________ of p_________
2 pairs of pentadactyl limbs
Hemiphylodactylus sp
Expanded digits for climbing walls and trees
Gecko gecko (tree lizard)
Eyes are large, pupils vertical, eyelids are lost
Adhesive toe pads
Loud vocalization
Varanus sp. (Giant or monitor lizard)
tail longer than head and body
Closes relative are Komodo dragon
Draco ornatus (flying lizard)
_________________ of the trunk used for gliding from one tree to another
Lateral folds of the trunk used for gliding from one tree to another
Draco ornatus (flying lizard)
_________________ of the trunk used for gliding from one tree to another
Lateral folds
Draco ornatus (flying lizard)
_________________ of the trunk used for gliding from one tree to another
Lateral folds of the trunk used for gliding from one tree to another
in Suborder Ophidia, limbs are?
Absent
in Suborder Ophidia, how are their eyes?
Eyelids are immovably fused
Eyes are covered by transparent scales
Some of Suborder Ophidia have __________connected to poison sacs
fangs
what order is the giants of the living reptiles
Order Crocodila
Order Crocodila are modified descendants of _________
bipedal archosaurs
Order Crocodila are modified descendants of _________
bipedal archosaurs
Snout of Crocodylus sp. (crocodiles)
narrow and pointed
4th teeth of the lower jaw of Crocodylus sp. (crocodiles) is ______?
EXPOSED
Snout of Alligator sp. (alligator)
broad and blunt
4th teeth of the lower jaw of Crocodylus sp. (crocodiles)?
FITS
are Crocodylus sp. (crocodiles) passive or aggressive?
Aggressive
are Alligator sp. (alligator) passive or aggressive?
Passive
Epidermal thickenings are the
scales or scutes
Dermal thickenings are
plates