Name: _______________________
Period: ______________________
AMPHIBIANS
HOLT BIOLOGY
CH. 30
Pg. 739-750
CHARACTERISTIC OF AMPHIBIANS
• _______________ (most)
• ___________________
• _________________________________
• _________________________________
• _________________________________
– Live on _____________, but must stay close to _____________________
MOVEMENT AND RESPONSE
• Strong ____________________ needed to support __________________ on land
• Good sense of __________________________
– _____________________
– Avoid ____________________________
– Eye covered in third eyelid (___________________________________)
– ____________________ sound transmitted through
________________________-vibration sent through ____________, tiny
sensitive _______ then to nerves
RESPIRATION
• Amphibians get oxygen from
– _________________
– _________________
– _________________
• LUNGS
– Larval state has ________________– Most adults breathe with ___________________
• Bag-like organ that allows for exchange of ______________
• __________________________
• Great surface area (due to __________________________)
• ________________ bottom jaw to draw air in, ___________ lower jaw to
force waste gas out
• ___________________________ more oxygen than water
– SKIN (______________________________)
• Skin is _________________________________
• Gases passed right through ________________
• _______________________ help keep skin moist
CIRCULATION
• More efficient than ______________
• PARTIALLY DIVIDED ____________
– _______________ (wall) divides top (____________) of heart
– Blood ___________ (oxygen rich and oxygen poor) in ______________________
– SEE PG. 742 DIAGRAM
– Ventricle contracts and sends blood to vessels of
___________________________
– DOUBLE LOOP __________________
– See pg. 743 (compare fish to amphibians)
– _______________________-carry oxygen rich blood from ___________ to
__________
– Second loop carries oxygen __________ blood from ___________ to
_____________
– High pressure
GROUPS OF AMPHIBIANS
• 3 main groups
– _____________________ (have legs and tail)
– ______________________ (no legs)
– __________________________ (legs, no tail)
SALAMANDERS
• Long _____________
• Smooth, moist _______________
• ___________________ species
• Need to keep skin _______________
• Active during _________________
• ___________________ that extend to capture prey
• Lay eggs in ___________________________________
• _______________________________ fertilization
• _____________ picks up sperm packet and fertilizes self
• Some retain __________ into adulthood (___________________________)
CAECILIANS
• ________________ amphibians (some aquatic)
• Bony scales imbedded in ______________
• _______________________
• Most ______________
• Teeth capture prey (____________________)
• _____________ to sense chemicals given off by prey
• __________ deposits sperm packet into female
• ____________ guards eggs until hatched
FROGS/TOADS
• _____________ species (____________________)
• Adults are _____________________ (eat small prey)
• Long sticky ___________________
•
•
•
•
•
Skeleton adapted for ___________ (fused _____________)
Muscular _______________ for power
Frog-_________________, toad-__________________
______________ fertilizes eggs __________________
_______________________ hatch from eggs
– Have _________________ for breathing
– Eat _________________
– _________________________ develop
______________________________________