17 CLASS AMPHIBIA

Question 1

are the representative of an evolutionary intermediate between aquatic and terrestrial
vertebrates, as they display both lifestyles in different stages of their lives, and these animals manage to persist
throughout time because of this ability to adopt to two habitats.

Answer 1

class amphibia

Question 2

they hover between aquatic and land environments, but still very dependent on very
moist environments

Answer 2

Quasiterrestrial

Question 2

(amphi = “_____” + bios = “_____”)

Answer 2

both, life

Question 3

their body temperature is dependent upon environmental temperature (cold-blooded)

Answer 3

Ectothermic

Question 4

they have 4 limbs in 2 pairs with associated shoulder or hip girdle (although some forms may have single pair of limbs, or no limbs at all)

Answer 4

Quadrupedal

Question 5

Includes frogs, toads, salamanders and caecilians

Answer 5

class amphibia

Question 5

distinct head, neck, trunk, and tail

Answer 5

salamanders and newts

Question 6

compressed body with fused head. no neck, and trunk

Answer 6

frogs and toads

Question 7

elongated trunk that is not strongly demarcated from head

Answer 7

caecilians

Question 7

(gas exchange can occur through skin)

Answer 7

cutaneous respiration

Question 8

are common; color change dependent on external and internal condition (ex. high
temperature = lighter color)

Answer 8

Chromatophores

Question 8

produces mucus for cutaneous respiration,
reproduction, thermoregulation, and defense

Answer 8

mucus glands

Question 9

produce toxic or noxious substances

Answer 9

granular glands

Question 10

clusters of granular glands located in certain regions of the body

Answer 10

macroglands

Question 11

Skin

Answer 11

(cutaneous breathing)

Question 12

Mouth

Answer 12

(buccal breathing)

Question 13

Presence of vocal chords, located in the ____, are much more developed in male frogs than in female

Answer 13

larynx

Question 14

Produce sound by passing air back and forth over the vocal chords between the lungs and a pair of_______ in the floor of the mouth

Answer 14

vocal pouches

Question 15

receives deoxygenated blood from the body (Systemic) and sends it to ventricle

Answer 15

right atrium

Question 16

receives oxygenated blood from the lungs and skin capillaries (Pulmocutaneous) and sends it to the ventricle

Answer 16

left atrium

Question 17

largest and most muscular part of heart that holds a mix of deoxygenated and oxygenated blood.

Answer 17

Ventricle

Question 17

are hemoglobin-rich and is nucleated

Answer 17

red blood cells

Question 18

for snapping/catching prey

Answer 18

a protrusible tongue

Question 19

large olfactory lobes and small cerebrum

Answer 19

Forebrain

Question 20

cerebellum and medulla

Answer 20

hindbrain

Question 20

to protect and wash eyes

Answer 20

Eyes with lids and lacrimal glands

Question 20

optic lobes

Answer 20

midbrain

Question 20

tympanic membrane (_______) and containing stapes that transmit vibrations

Answer 20

eardrum

Question 21

Larva are fishlike (no limbs) with gills (called

Answer 21

tadpoles or pollywogs

Question 22

Amphibians in temperate habitats undergo period of hibernation during winter

Answer 22

hibernation

Question 22

Similar to hibernation, but in amphibians in warmer climates

Answer 22

Aaestivation

Question 23

no air is taken into lungs since all necessary respiration can occur through skin, and heart rate will decrease

Answer 23

vital processes and metabolism are reduced

Question 24

During hot/dry periods, they will go into a

Answer 24

a prolonged state of dormancy

Question 25

Some salamander species can stay as larval forms (called

Answer 25

axolotl)

Question 26

(a phenomenon called

Answer 26

neotony

Question 27

Order ANURA larval form are born with gills and a tail called:

Answer 27

tadpoles

Question 28

Which of the following is not a mode of respiration in adult amphibians?

Answer 28

gills

Question 29

This is a prolonged state of dormancy exhibited by amphibians in dry periods

Answer 29

Aestivation

Question 30

These are glands found in the skin of amphibians which contain toxins

Answer 30

Granular glands

Question 31

The body of this order of amphibians is elongated and limbless

Answer 31

Gymniphiona

Question 31

This is the larval form of salamanders that can reproduce

Answer 31

Axolotl