Vertebrates Part 1

Question 1

What do Chordates have in common with Lancelet and Urochordata?

Answer 1

They all have the 4 common structures found in Chordates.

Question 2

Name the 4 main structures found in Chordates.

Answer 2

1. Notochord
2. Dorsal hallow nerve cord
3. Pharyngeal slits or clefts(gills)
4. Post-oral tail

Question 3

How do the 4 structures of Chordates relate to us humans?

Answer 3

We could have evolved from these creatures. We have nerve cords, notochords, possible gills hidden between our mouth and throat, but we don’t have a tail(behind our butt).

Question 4

Lancelets are the…

Answer 4

Mature forms of juvenile

Question 5

Urochordata

Answer 5

Have the 4 structures, but aren’t vertebrates.

Question 6

What’s another name for Myxini and Petromyzontida what do they do?

Answer 6

Hagfish-Decomposers love to eat dead fish.

Question 7

Myxini and Petromyzontida don’t have what?

Answer 7

Jaws

Question 8

Chondrichthyes are…

Answer 8

Sharks, Sting Rays, and Ratfish

Question 9

What are some unique characteristics about Chondrichthyes?

Answer 9

1. Jaws
2. Mineralized skeleton
3. Vertebrae with cartage

Question 10

Lobe fin fishes are an example of what kind of creature?

Answer 10

Anoxic: Animal without oxygen

*Have true lungs to breath on land

Question 11

True or false Tiktaalik is a fish?

Answer 11

False

*There is evidence showing it could be both a fish and tetrapod(creature with 4 legs)

Question 12

What is the sister group of Chordates?

Answer 12

Echinodermata

Question 13

What is the difference between Lancelets and Leaches?

Answer 13

Lancelets have the 4 structures of a Chordate, but Leaches don’t.

Question 14

What is the possible evolution of Arms between different sea creatures? Name these structures.

Answer 14

1. Unla
2. Radius
3. Humerus

Question 15

Name the 3 Order groups of Amphibians.

Answer 15

1. Urodela
2. Anura
3. Apoda

Question 16

Urodela

Answer 16

Nuts and Salamanders

Question 17

Anura(No Tail)

Answer 17

Frogs and Toads

Question 18

What are the steps for development of frogs?

Answer 18

1. Tadpole
2. Metamorphosis
3. Adults return to mate

Question 19

What is killing most of the frogs around the world?

Answer 19

1. Chytrid Fungus

2. Toxins found in H2O

Question 20

Name the animals that are part of the group Amniote.

Answer 20

1. Reptiles
2. Tuataras
3. Snakes
4. Lizards
5. Alligators

Question 21

What is special about the bird Moa?

Answer 21

It’s an extinct gigantic flightless bird that used to roam New Zealand.

Question 22

Apoda

Answer 22

Amphibian Worms

Question 23

What is the most primitive animal phylum? Name the the phylum and common name.

Answer 23

Porifera-Sponges

Question 24

What is the cell called that transports food throughout the body for sponges?

Answer 24

Amphaposite