Phylum Chordata Flashcards

1
Q

What is the Phylum and what does it mean?

A

Chordata - cord

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2
Q

What is the symmetry

A

Bilateral

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3
Q

What are the three germ layers?

A

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

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4
Q

What is complete

A

Digestive System

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5
Q

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

A

Notochord - provides structural support

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6
Q

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

A

Single dorsal nerve cord. Brain

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7
Q

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

A

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

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8
Q

What tail do they have

A

Postanal tail

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9
Q

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

A

Endostyle

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10
Q

Where is the heart?

A

Ventral heart

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11
Q

What are the blood vessels and circulatory system like?

A

Dorsal and Ventral Blood Vessel. Closed circulatory system

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12
Q

What is the endoskeleton made of?

A

Cartilage and bone

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13
Q

What layer is transparent?

A

Epidermis

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14
Q

What goes into what and exit through what?

A

Atrium. Atriopore

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15
Q

What is the function of cirrus (Cirri)

A

separate larger food particles, act as filter

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16
Q

What are the five main chordata characteristics?

A

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