Reptiles, birds, and Mammals Flashcards
Amniotic egg
Is a shelled, water retaining egg that allows reptile, bird, and certain mammal embryos, to develop on land.
State the five characteristics that set reptiles apart from other vertebrates. (Turtles, snakes, lizards, alligators, crocs, and dynos)
Covered with though dry scales, Ectothermic (cold blooded), breath with lungs throughout their lives, 3 chambered hearts, and they have amniotic eggs.
Neurotoxin
a poison that acts on the nervous system.
State the function of the yolk, the allantois and the albumen
Yolk-food Allantois-breathing Albumen-Destroys pathogens, supply water, and supply’s amino acids.
What are the two most important functions of reptile scales
Reptile scales prevent water loss and insulate the reptile’s bod
Endothermic
heated from within the body
State the six characteristics that set birds apart from other vertebrates.
- Endothermic
- Heart with four chambers
- Toothless bill
- Oviparous, laying an amniotic egg that is covered in a lime-containing shell
- Covered with feathers
- Skeleton composed of porous, lightweight bones (not a characteristic for all birds)
Do all birds fly?
No. There are two orders of flightless birds.
Down feathers
Feathers with smooth barbules but no hooked barbules
contour feathers
Feathers with hooked and smooth barbules, allowing the barbules to interlock
Which shell is harder? reptile or bird?
bird
What is a bird actually doing when it is preening?
When preening, a bird is actually oiling its feathers.
What type of feather is used during flight?
contour
What type of feather is used for insulation
down
What is unique about a bird’s method of molting
A bird’s feathers molt in pairs
which is heavier, a bird’s bone or the same size bone from an amphibian?
Amphibian bone
Reptiles have a growth-related characteristic in common with the arthropods. What is it?
they both have to molt
Hemotoxin
blood poison
placenta
A structure that allows an embryo to be nourished with its mothers blood supply.
gestation
The period of time in which an embryo develops before being born.
mammary glands
Specialized organs in mammals that produce milk to nourish the young.
state the five charcteristics that set mammals apart from other vertebrates.
- have hair
- reproduce with internal fertilization and usually viviparous
- nourshish young with milk
- four chambered heart
- endothermic
What is the main difference between offspring born after a long gestation period and offspring born of short gestation period?
the longer the gestation the more developed they are.
Name a nonplacental mammal
kangaroo
you see some barbs from a feather. you have no idea whether they come from down feather of contour feathers. looking at the barbs under the microscope, however, you see that there are no hooked barbules. What kind of feather is this?
Down feathers
In this module, we studied reptiles reptiles, birds, and mammals. For each class, indicate whether they are ectothermic or endothermic.
reptiles-ecto birds-endo mammals-endo
What are at least three things that that flight engineers have to learn from birds to make practical flight possible.
Proper wing structure, strong hallow tubes from bird bones, and how to reduce wing turbulence
tuataras order (rhynchocephalia, squamata, crocodilia, or testudines)
rhynchocephalia
turtle order (rhynchocephalia, squamata, crocodilia, or testudines)
testudines
alligators order (rhynchocephalia, squamata, crocodilia, or testudines)
crocodilia
lizards order (rhynchocephalia, squamata, crocodilia, or testudines)
squamata
tortoises order (rhynchocephalia, squamata, crocodilia, or testudines)
testudines
