Ch 24

Question 1

What are the characteristics of chordates

Answer 1

1. Notochord
2. Dorsal nerve cord
3. Gill slits
4. Post anal tail

Question 2

What do invertebrate chordates lack, compared to vertebrate chordates?

Answer 2

Backbone-

they have bands of muscles that protect their notocord and nerve cord

Question 3

What groups are included with invertebrate chordates?

Answer 3

Tunicates (sea squirts)

Lancelets

Question 4

Which invertebrate chordates have all chordate characteristics as larvae but not adults

Answer 4

Tunicates

Question 5

Which jaw less fishes have sucker like mouths with rasping teeth on tongue used to suck blood and body fluids?

Answer 5

Lampreys

Question 6

How many chambers do mammals have?

Answer 6

4

Question 7

What are the main subgroups of mammals? Give examples

Answer 7

Monotrems- platypus
Marsupials- kangaroos
Placental Mammals- Rats

Question 8

Which invertebrate chordates have all chordate characteristics as larvae and adults?

Answer 8

Lancelets

Question 9

What type of fish are included in the class Chondrichthyes? Give examples

Answer 9

Sharks, skates, and rays

Question 10

How many chambers does the amphibian heart have?

Answer 10

3

Question 11

Which jaw less fish produce massive amounts of slime as a defense mechanism?

Answer 11

Hagfish

Question 12

What are some adaptations birds have for flight?

Answer 12

feathers
hollow bones
shelled eggs
single ovaries (females)
can control body temp in flight

Question 13

How many chambers does the reptilian heart have?

Answer 13

3

except crocs and birds they have 4

Question 14

What are two classes that are included in the group of Jaw less fishes?

Answer 14

Hagfish

Lampreys

Question 15

Mention the main adaptations that allow vertebrates to invade most habitats

Answer 15

1. Endoskeleton
2. Paired appendages
3. Brain size & sensory structures

Question 16

What two type of fish are included in the class Osteichthyes?

Answer 16

Ray-Finned

Lobe-Finned

Question 17

What are the characteristics of mammals?

Answer 17

1. Warm Blooded
2. 4 chamber heart
3. Most have hair/fur
4. appendages
5. highly developed brain

Question 18

What type of fish gave rise to Tetrapods?

Answer 18

Lobe-Finned

Question 19

How many chambers does a fish heart have?

Answer 19

2

Question 20

On a remote island, a new animal is found. It has a four-chambered heart and lungs and is endothermic. It has internal fertilization, lays shelled eggs, and nurses its young after they hatch. This animal is most likely a(n)

- monotreme.
- reptile.
- amphibian.
- marsupial.
- coelacanth.

Answer 20

monotreme

Question 21

All chordates have

- gills.
- a ventral, hollow nerve cord.
- a backbone.
- a bony endoskeleton.
- a post-anal tail.

Answer 21

a post-anal tail.

Question 22

The notochord persists into adulthood in all chordates. True or False?

- True
- False

Answer 22

False

Question 23

In sharks and rays, the skeleton is made of ________.

Answer 23

cartilage

Question 24

What is the function of the vertebral column?

- Limit muscle attachments
- Provide weight in aquatic life-forms
- Tear and crush food
- Help increase the metabolic rate
- Protect the nerve cord

Answer 24

Protect the nerve cord

Question 25

Which were the first tetrapods to move to land?

- Hagfishes
- Reptiles
- Monotremes
- Amphibians
- Ray-finned fishes

Answer 25

Amphibians