vertebrates. vertebrates classification domain: eukarya kingdom:anamilia phylum:chordata...

VERTEBRATES

VertebratesClassificationDomain: Eukarya

Kingdom: Anamilia

Phylum: Chordata

Subphylums: Cephalochordata

Urochordata

Vertebrata

CLASSIFICATION OF ANIMALS - MAJOR PHYLA

I. PHYLUM CHORDATA

1. Characteristics a. Bilateral symmetry

b. Coelom - 3 tissue layers

c. Single, dorsal nerve cord

d. Notochord

e. Gill slits

f. tail

Figure 34.2 Chordate characteristics

Classification

Subphylums:

•Cephalochordata

– Lancelets

•Urochordata

–Tunicates

•Vertebrata

– animals with back bones

Vertebrates

Subphylum Vertebrata

•Fish (3 Classes)

•Amphibia

•Reptiles (2 Classes)

•Aves

•Mammalia

Vertebrates

VertebratesVertebrata

•Fish

– ectothermic

– 2 chambered heart

– sexual reproduction

– scales covering body

– *first to have jaws*

VertebratesVertebrata

•Amphibia

– ectothermic

– live in water and *moist land*– metamorphosis

•egg -> tadpole -> adult

– walking

– 3 chambered heart

– *some have lungs*,

some breathe through

skin -> soft moist skin

VertebratesVertebrata

•Reptiles

– ectothermic

– aquatic & terrestrial

•*can live on dry land*

– scales (made of keratin)

– reproduce on land (leathery eggs)

– some have a 4 chambered heart

VertebratesVertebrata

•Reptiles

VertebratesVertebrata

•Aves

– *endothermic*

– covered in feathers

– lay eggs (hard shell)

– have scales on legs

– 4 chambered heart

– terrestrial habitats

VertebratesVertebrata

•Aves

VertebratesVertebrata

•Mammalia

– endothermic

– covered in hair

– *nurse their young*

•mammary glands produce milk

– 4 chambered hearts

– modified limbs

– aquatic and terrestrial

– lay eggs, finish development in pouches, birth fully developed animals

VertebratesVertebrata

•Mammalia

III. ADAPTATIONS IN ANIMALSA. Behavior

1. Anything an animal does in response to a stimuli in its environment

2. Innate Behavior

3. Learned Behavior

B. Defense

1. Mechanical

2. Chemical

3. Camouflage