Intro
All vertebrae, except ________, are tetrapods.
Fish
Characteristics of fish.
ectothermic, have gills, paired fins, a two-chambered heart, and are oviparous.
Ectotherm
Oviparous
Mammals regulate temperature through this manner.
Endotherms
Vertebraes regulate body temperature in two ways.
Ectotherms, endotherms
Cartilaginous and jawless fish have skeletons made of
cartilage.
During the early stage of life, all amphibian orders have this.
gills
All birds are grouped together in the class
Aves.
Most mammals reproduce this way.
Viviparous
Complete digestive system, a muscular tail, bilateral symmetry, a notochord, and pharyngeal slits that are present during development.
Chordate characteristics
Jawless fish lack
jaws and paired fins.
Reptiles produce this type of egg
amniotic
Endotherm
Mammals have this many chambers in their heart.
4
A system in which blood is enclosed in blood vessels rather than diffusing freely through the tissues
closed circulatory system
This allows fish to stay buoyant
swim bladder
Reptiles have this many chambers in their heart.
3 or 4
Birds live in
terrestrial environments
These help mammals maintain endothermic conditions.
fat, fur, hair
The vertebrate body plan
consists of a central vertebral column, a brain enclosed within a skull, two pairs of limbs, and a closed circulatory system.
These class(es) of fish have swim bladders.
Osteichthyes
All orders of reptiles reproduce in this manner.
Oviparous
Air moves faster above the wing enabling this to happen.
lower the pressure to create lift.
These mammals are oviparous.
Monotremes