Phylum Chordata

Question 1

What is the Phylum and what does it mean?

Answer 1

Chordata - cord

Question 2

What is the symmetry

Answer 2

Bilateral

Question 3

What are the three germ layers?

Answer 3

Ectoderm (outer), Mesoderm (Middle), Endoderm (inner)

Question 4

What is complete

Answer 4

Digestive System

Question 5

What is the skeletal rod present at some stage in the life cycle and its function?

Answer 5

Notochord - provides structural support

Question 6

What is the nerve cord like and what is the most anterior of the nerve cord?

Answer 6

Single dorsal nerve cord. Brain

Question 7

What pouches do they have and what can it develop into in aquatic chordates

Answer 7

Pharyngeal pouches and they develop into gill slits in aquatic chordates.

Question 8

What tail do they have

Answer 8

Postanal tail

Question 9

What is the thyroid gland that is present called? and the function

Answer 9

Endostyle

Question 10

Where is the heart?

Answer 10

Ventral heart

Question 11

What are the blood vessels and circulatory system like?

Answer 11

Dorsal and Ventral Blood Vessel. Closed circulatory system

Question 12

What is the endoskeleton made of?

Answer 12

Cartilage and bone

Question 13

What layer is transparent?

Answer 13

Epidermis

Question 14

What goes into what and exit through what?

Answer 14

Atrium. Atriopore

Question 15

What is the function of cirrus (Cirri)

Answer 15

separate larger food particles, act as filter

Question 16

What are the five main chordata characteristics?

Answer 16

Notochord, Dorsal nerve cord, Postanal tail, Pharyngeal pouches, and Endostyle