Unit 5

Question 1

Have transient placenta

Answer 1

Marsupials

Question 2

List the types of keratinized scales

Answer 2

Placoid (ancestral)
Ganoid (derived)
             More derived
Ctenoid
Absent
Cycloid

Question 3

Viviparous and chorioallentoic

Answer 3

Eutheria

Question 4

List functions of hair

Answer 4

Cryptic coloration
Insulating
Cooling
Predator deterrence
Temperature regulation

Question 5

Midbrain is used in hearing (mesencephalon)

Answer 5

Anura (frogs)

Question 6

What three groups are made up of fossil specimens only (no living representatives)

Answer 6

Ostracoderms
Placoderms
Acanthodia

Question 7

Freshwater fish exhibit…

Answer 7

Hyperosmotic regulation

Question 8

Fertilized eggs (with yolk) remain for a time with maternal parent

Answer 8

Ovovipary

Question 9

Modifications in bone for hearing

Answer 9

Malleus
Stapes
Incus

Question 10

Retemirable and oval are in what animals

Answer 10

Actinopterygii - ray finned dish

Question 11

Extinct group of “fish” that are armored, vertebrates with articulated jaws derived from the first pair of gill arches.

Answer 11

Placoderms

Question 12

What are the skull modifications in squamata

Answer 12

Loss of bones

Loose articulation of remaining bones

Question 13

Have kinetic skulls

Answer 13

Squamata (snakes)

Question 14

List some hair modifications

Answer 14

Vibrassae
Spines
Bristles
Awns

Question 15

What group has motile non feeding larva and sessile feeding adults

Answer 15

Urochordata (tunicates)

Question 16

Three types of caudal fins

Answer 16

Homocercal - rayfinned
Heterocercal - cartilaginous
Diphycercal - lobed finned

Question 17

Characteristics of swimming

Answer 17

Body shape minimizes friction
Buoyancy means lower energy expedenture
Fin shape generates “lift”

Question 18

What 3 terms describe the movements of fish in the water column

Answer 18

Pitch (up/down)
Roll
Yaw (side to side)

Question 19

Grow continuously but never shed (fall off)

Answer 19

Horns

Question 20

What Chordate features are present in Phylum Hemichordata

Answer 20

1. Dorsal, hollow nerve chord

2. Pharyngeal gill slits

Question 21

When the larval stage become precociously reproductive

Answer 21

Paedomirphosis

Question 22

Characteristics of testudines

Answer 22

Loss of teeth
Ossified keratinized plates (pelvic/pectoral girdles)
Good vision and smell but poor hearing

Question 23

Adjacent to swim bladder, transmits vibrations in actinopterygii

Answer 23

Webberian ossicles

Question 24

Separates oral from nasal cavity to allow breathing and chewing simultaneously

Answer 24

Secondary palate

Question 25

Has cartilaginous endoskeleton

Answer 25

Chondricthyes

Question 26

Extinct group of "fish" that are jawless, armored, vertebrates

Answer 26

Ostracoderms

Question 27

List in order the groups that lead up to the mammals

Answer 27

Synapsids----->Therapsids----->Cynidonts----->Mammalian

Question 28

What terms are used to describe the three styles of candle fins

Answer 28

1. Homocercal (bony fish) 2. Heterocercal (cartilaginous fish/sharks) 3. Diphycercal (lobed finned fish)

Question 29

Fertilized eggs (invested with yolk) mature/develop away from maternal parents

Answer 29

Ovipary

Question 30

Has no ossified endoskeleton

Answer 30

Cephalospidomorphi

Question 31

Extinct group of "fish" that are jawed vertebrates with dermal structures that resemble denticles seen in modern day sharks.

Answer 31

Acanthodia

Question 32

Where are turbinate bones located

Answer 32

Nasal cavity

Question 33

Have chromatophores

Answer 33

Anura (frogs)

Question 34

Ectothermic with behavioral adjustments to maintain body temp

Answer 34

Squamata

Question 35

Group that has slime glands

Answer 35

Myxini

Question 36

What features allow sharks to swim

Answer 36

Constant swimming Fatty deposits Lateral line (sensory organs)

Question 37

Aves skeletal modifications

Answer 37

Fusion of bones - pygostyle and synsacrum Loss of teeth Modified digestion Respiration - one lung with anterior/posterior air sacs

Question 38

What are the 5 Chordate features

Answer 38

1. Notochord 2. Pharyngeal gill slits 3. Dorsal, hollow nerve chord 4. Post anal tail 5. Endostyle