A Beka Book Biology 2 Flashcards

Terms Definitions
Hemotoxin
Blood poison
Neurotoxin
Nerve poison
Mesoderm
Middle layer
Insectivorous
Insect-eating animals
Syrinx
The voice box
Endoskeleton
An internal skeleton
Diurnal
Active during the daytime
Frogs
Leaping, tailless amphibians with smooth skin
Incubation
Involves keeping the eggs warm
Carnivores
Flesh-eating animals; prey on herbivores
Antitoxins
Antibodies that attack the toxin molecules and neutralize their effects
Lizards
Elongated, four-legged reptiles with a tapered tale
Crocodilians
Large, thick skinned, long tailed, aquatic reptiles; the largest living reptiles
Cloaca
The area where food is eliminated
Horns
Hollow structures which are usually permanent and thus not shed
Monkeys
The most familiar primates with tails
Marsupials
Animals with a pouch; ex. kangaroos
Tetrapods
Animals with four appendages attached by special bones to the body at the hips and shoulders
Elapids
Snakes with immoveable fangs in the front of the upper jaw
Paedomorphosis
A condition in which the salamander never undergo metamorphosis, but remain in the water as permanent larvae; retaining gills and other larval characteristics throughout their life
Spermatophore
The gelatinous structure in which the male salamander deposits sperm
Tortoise
Land turtles with feet and claws suitable for terrestrial life
Vultures
The largest living lands birds of North America
Fermentation
The process used by microorganisms to break down cellulose
Uterus
A muscular organ of the female reproductive system in which a fertilized egg can develop
Symmetry
Having the same shape, size, and position on both sides of a dividing line
Ambergris
Waxy, gray substance produced by the sperm whale's digestive tract
Sea turtles
The longest living turtles in the world
Estivation
A state of summer dormancy and limited activity
Perching birds
Birds which have three toes pointing forward and one toe pointing backward; designed for holding on to branches
Precocial
Birds that are covered with down and able to run or swim almost immediately after hatching
Flight feathers
Special contour feathers on the wings; provide the necessary wing shape for flight
Vanes
The projection on either side of a bird's feather
Lemurs
An unusual kind of primate which live only in one area
Cecum
A special side pocked near the stomach to provide for a fermentation chamber; found in horses and rabbits
Marsupium
An abdominal pouch in which the young are raised
Pit viper
A snake with a sensory depression, or pit, on each side of its head between the eye and the nostril; enables the snake to "see" warm objects in absolute darkness
Feathers
One of the most obvious features of a bird that allows it to fly
Peregrine falcon
The fasted flying bird and also the fastest of all living creatures
Blue whale
The largest mammal in the world; 110 feet in length and weighing more than 150 tons
Bilateral symmetry
A type of symmetry where the organism can be cut in half in only one plane to make each half like the other (humans display this kind of symmetry)
Blastula
A hollow ball of cells that marks the end of the cleavage stage during early embryonic development in animals
Rectilinear movement
A type of snake movement in which the snake alternately stretches and shortens segments of its body in order to creep forward in a straight line
Brood patch
A place on an adult bird's belly once it loses its feathers
Primary germ layers
The distinct layers of cells formed by the blastula
/ 45
Term:
Definition:
Definition:

Leave a Comment ({[ getComments().length ]})

Comments ({[ getComments().length ]})

{[comment.username]}

{[ comment.comment ]}

View All {[ getComments().length ]} Comments
Ask a homework question - tutors are online