Card Set Information
Biology 104 test 2
How are chordates types of skeletons different than invertebrates?
They skeleton is internal and the muscle is attached to the outter surface.
What is a notochord?
A dorsal supporting rod.
Which part of the dorsal tubular nerve cord becomes the brain?
What becomes functioning gills for nonvertebrate chordates?
What is the name of the tail that extends beyond the anus?
Chordates are divided into what two groups?
Cephalochordates and urochordates.
Lancets are _________chordates.
Sea squirts are ________chordates.
What are the four main characteristics of invertebrate chordates?
Dorsal tubular nerve cord
What are the four main characteristics of vertebrate chordates?
Jawed fishes and all other vertebrates are called _______.
Gnathostomes means _______________.
animals with jaws
What were the first vertebrates to have have limbs?
Terrestrial vertebrates are ___________. (four limbs)
Producing an amniotic egg means that ________ are fully adapted to living on land.
What is the largest group of vertebrates?
Todays jawless fish are called _________.
What are the four characteristics of jawed fish?
Cartilaginous or bony endoskeleton
Embryo's of amniotes have _______________.
Some reptiles are called diapsids because they have ________________________.
a skull with two openings behing the eyes
Echino means ______.
An echinoderm (spiny skin) is a ________.
Stalked sea lillies and feather stars fall into the class _______.
Pinnules are _____.
Sea cucumbers fall into the class _______________.
Sea urchins and sand dollars belong to class ________.
The gonads in sea stars are located in the ______.
Sharks, skates and rays are in the class _____________.
Ray-finned bony fish are in the class ___________.
Unlike most fish, the lung fish and coelocanth have _______.
Lungfish are mostly located around which three continents?
The habitat for coelocanth is in ____________.
mt DNA suggests that lobe finned fish are more closely related to ________ than other fish.
The habitat of tiktaalik was in a ______________.
Tiktaalik is more closely related to ________ than it is to _______.
Girdles are ______________________________.
bones in the upper chest and hips where limbs connect
What are some characteristics of amphibians?
Limbs with girdles for walking
Smooth, thin & moist skin
Lungs supplement skin gas exchange
What is the exception to amphibians having an afixed upper jaw?
Gerrothorax pulcherrimus(toilet seat mouth)
What is a spiracle?
An opening in the skull, usually associted with ears.
Frogs reproduce by amplexus, which is ____________________.
dumping sperm onto eggs in water
The larvae of frogs is called ______.
A female salamander picks up the spermataphore with her _______.
Ectothermic means _________________________.
to have the same temperature as your surrounding environment
Cauda means _______.
The amnion is a ____________.
The function of the chorion is to ___________________________.
help exchange gases with the outside environment
The function of the yolk sac is to ___________________.
provide nutrients for the embryo
The allantois serves as a ___________________________.
receptor for nitrogen waste products
Class reptilia has diverse habitats, however the requirement is that they are all ________.
Reptilia has keratinized scaly skin, which means _____________________.
it is filled with a protein called keratin
The order from oldest to newest vertebrate life is:
Reptiles evolved from ____________.
____ out of _____ endemic species found in Alabama are poisonous.
The eastern coral snake is found in ______________ and usually lives ________.
southern teir counties
Coral snakes can be identified by _______________.
red touching yellow.
The coral snake gets the venom into it's enemy by __________________.
biting them, then twisting it's head to open the skin and allow venom to seep in.
The defense mechanism of a coral snake is to _________________________.
turn it's tail into a ball and swing it at the enemy
Another name for the cotton mouth snake is ___________.