PHYLUM CHORDATA

Question 1

Very diverse Phylum
Most advanced Phylum
More complex Anatomy

Answer 1

Phylum Chordata

Question 2

Flexible rod-like structure enclosed by a fibrous sheath

Answer 2

Notochord

Question 3

Front end usually enlarged to form brain

Answer 3

Dorsal tubular nerve cord

Question 4

Filter feeding apparatus

Answer 4

Pharyngeal (gills) slits

Question 5

Specific kind of tissue found only in chordates

Answer 5

Endostyle or thyroid gland

Question 6

In aquatic chordates it provides mobility
In terrestrial chordate it became a tail for balance not for movement

Answer 6

Post-anal tail

Question 7

Oldest known chordate fossil if from

Answer 7

Ediacaran

Question 8

Three major subphylum

Answer 8

Subphylum Urochordata (tunicates)
Subphylum Cephalochordata (lancelets)
Subphylum Vertebra (vertebrates)

Question 9

Adult have tough, nonliving, ____ covering body secreted by mantle

Answer 9

Tunic

Question 10

Are barrel shaped pelagic animals with transparent gelatinous bodies

Answer 10

Salps

Question 11

Feeding and digestion of tunicates

Answer 11

Incurrent siphon»pharynx»slits»atrium»excurrent siphon