Question: 1.nonvertebrate chordates are found? a. marine b. marine 2.fertilization in nonvertebrate chordat…

1.nonvertebrate chordates are found? a. marine b. marine

2.fertilization in nonvertebrate chordates is? a) external b)
internal

3.How would you describe the support structure of tunicates? A.
exoskeleton B. exoskeleton of silica C.hydrostatic skeleton D.
endoskeleton of calcium carbonate

4.How do echinoderms eliminate nitrogenous wastes? a. diffussion
through tube feet b.nephridia c.the madreporita d.a series of
siphons e.malphigian tubules

5.By what mechanism do tunicates complete gas exchange? a.
trachea b. diffusion through skin c.oxygen enters through the
incurrent siphon and co2 is released through the excurrent siphon
d.diffusion through tubefeet

6.How would you describe the digestive system of tunicates? a.
simple tube from pharynx to anus b. well developed, including a
mouth, crop, gizzard and intestine c. U shaped system with siphons
for intake and excrection, and a stomach. d. diffusion of nutrients
through the skin

7.Nonvertebrate chordates are found in which of the following
types of habitats? a.marine b. freshwater c. terrestrial d. all
three above

8 how would you describe the digestive system of lancelets?
a.well developed, including a mouth, crop, gizzard and intestine
b.U shaped system with siphons for intake and excrection, and a
stomach. c.diffusion of nutrients through the skin d. simple tube
from pharynx to anus