Reptilia continued Flashcards
(26 cards)
Reptiles
What are their feeding mechanisms?
Carnivores, herbivores or, both
Reptiles
Who has sticky tongues?
Chameleons
Reptiles
Venom means it is
Injected
Some reptiles are venomous
Reptiles
Why are young snakes more likely to use venom?
They dont have control that older snakes have
Dont know Venom is expensive to make
Reptiles
What kind of jaws do snakes have?
Detachable
4 jaws
Reptiles
How do they regulate their temperature?
Ectotherms
Basking
Reptile Vision
In Serpentes vision is a ___-derived trait
Secondarily derived
Reptile Vision
Sauria: Power and color?
Very good vision
Color vision in many
Reptile Vision
3rd eye name?
Pineal eye
Reptile Vision
What does the pineal eye sense?
light / dark
Translates to day length
Reptile Vision
Longer days =
Summer
Time to reproduce
Reptile Vision
Shorter days =
Winter
Shelter / hibernation
Reptile Senses
What is Circadian rhythm?
Timing of life’s events
Reptile Senses
Zeitgeber purpose
External stimuli that help set circadian rhythm
Reptile Senses
Who doesn’t have a tympanum?
Serpentes
Many others have great hearing with tympanum
Reptile Senses
Who has Jacobson’s organ and what does it do?
Squamata
Can smell left and right
Reptile Senses
Infrared Radiation
Pit organ purpose?
Sensitivity?
Form images (heat vision) Sensitive to 0.001 degrees celsius
Reptile Excretion
What organ do they have and what does it produce?
Kidneys
Produce uric acid for water conservation
Reptile Reproduction
Monoecious or dioecious?
Dioecious
Reptile Reproduction
Parthenogenic?
Very rarely parthenogenic
Reptile Reproduction
Internal or external fertilization?
Internal fertilization
Reptile Reproduction: Amniotic eggs
What are the 4 membranes?
- Allantois
- Yolk sac
- Amnion
- Chorion
Reptile Reproduction: Amniotic eggs
Allantois purpose?
Stores metabolic wastes
Reptile Reproduction: Amniotic eggs
Yolk sac purpose?
Stores nutrients
