Exam 3- Part two

Question 1

Skeletal rods that supported pharyngeal slits later formed ___ ___

Answer 1

The jaw

Question 2

What is distinctive of Chondrichthyans (sharks/rays)

Answer 2

Light flexible cartilaginous endoskeleton

Question 3

What are chondrichthian teeth related to in the structural sense?

Answer 3

scales

Question 4

Where did ray finned fishes originally evolve?

Answer 4

Fresh water

Question 5

What are the characteristic of ray fined fishes?

Answer 5

Class Actinipterygi, internal skeleton, no muscles in fin, bony

Question 6

Where di the swim bladder evolve from in ray finned fish?

Answer 6

Swim bladder modified from simple lungs of freshwater fish

Question 7

What belong to the lobe-fin clade?

Answer 7

tetraphods, lungfish

Question 8

What did birds evolve from?

Answer 8

Dinosaurs

Question 9

How did the amniotic egg aid in the success of vertebrates?

Answer 9

Can survive in dry environments (prevents desiccation)

Question 10

What did snakes evolve from

Answer 10

Legless lepidosaurs evolved from lizards

Question 11

What happened in the cretaceous period?

Answer 11

Mass extinction of dinosaurs but not birds

Question 12

What is an amniote?

Answer 12

Named from the amniotic egg, contains membranes that protect the embryo (exra membranes AMNION, CHORION)

Question 13

What characteristics are exclusive to birds

Answer 13

Feathers, keel sternum, pneumatic bone

Question 14

Evolution leading to mamals

Answer 14

EPH, URO, MYX, PER, CHO, ACT, ACT, DIP, COMP, REP, MAM. EUMPCAADCRM

Question 15

Where did birds evolve from?

Answer 15

From small theropods, a group of carnivorous dinosaurs

Question 16

Ichtyosarus and Plesiosaurs returned to the ___

Answer 16

Sea

Question 17

Pterosaurs played a role in birda dn bat characteristics. Same lineage. Archosaurs produced:

Answer 17

Crocodilians and dinosaurs

Question 18

What are endotherms?

Answer 18

Capable of keeping their body warms though metabolism (reptiles are exothermic)

Question 19

What group of animals have a diaphragm?

Answer 19

Mammals

Question 20

Differentiation of teeth is seen in which group?

Answer 20

Mammals

Question 21

What characteristics are exclusive to mammals?

Answer 21

Mammary glands(milk), Hair, Larger brain, differentiated teeth

Question 22

Increased brain to body ratio was an increased evolutionary trait for what group?

Answer 22

Primates

Question 23

In reptile and mammals where does fertilization take place?

Answer 23

Internally

Question 24

What different ways do mammals reproduce?

Answer 24

Egg laying, embryo, placenta

Question 25

__________ have moist skin, three chambered heart, fertilize eggs externally (predominately)

Answer 25

Amphibians

Question 26

What are the most abundant and divers extant vertebrae?

Answer 26

Actinoptergi

Question 27

Taxonomy general to specific

Answer 27

Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species

Question 28

What role did re-positioning of foramen magnum play?

Answer 28

Better bipedal posture for the homo sp.

Question 29

What species first made tools

Answer 29

Giarhi

Question 30

What is significant of homo erectus

Answer 30

First to use fire

Question 31

How are human and apes related anatomically?

Answer 31

Brain size, short jaw, social behavior

Question 32

How old was the oldest Homo Sp fossil?

Answer 32

195,000 ya

Question 33

Humans and apes are both _________

Answer 33

Hominoids

Question 34

What are Prosimians?

Answer 34

Primates

Question 35

What role did DLX genes play?

Answer 35

increased gene complexity in vertebrates

Question 36

Which gene led to the development of speech?

Answer 36

FOX P2

Question 37

What was a snorkosarus

Answer 37

Dinosaur from Flintstones (dino)