Ch. 34 Evolution of Chordates

Question 1

4 derived characteristics of Chordates:

Answer 1

1. Notochord
2. Dorsal, hollow nerve cord
3. Pharyngeal clefts or slits
4. Muscular post anal tail

Question 2

Vertebrates are

Answer 2

chordates that have a back bone.

Question 3

4 derived characteristics of vertebrates

Answer 3

1. Back bone
2. Neural crest
3. complex genetic code
4. larger brain & skull

Question 4

Amniotes are tetrapods that have

Answer 4

terrestrial adapted eggs

Question 5

What are amniotic eggs?

Answer 5

reduced dependence on water for reproduction.

Question 6

What are the three groups of mammals?

Answer 6

Montremes (egg-laying)
Marsupials (pouch)
Eutherians (placental)

Question 7

Primates groups

Answer 7

Lemurs
Tarsiers
Monkeys
Apes

Question 8

Humans are

Answer 8

mammals that have large brains and bipedal locomotion