Quiz 7 - Echinodermata

Question 1

deuterostomes are characterized by having (4)

Answer 1

a blastopore that becomes the anus, being enterocoelous, radial symmetry, intermediate cleavage

Question 2

evolved from part of the coelom and uses seawater or coelomic fluid to generate hydraulic pressure to operate tube feet

Answer 2

water vascular system

Question 3

fused calcareous endoskeleton

Answer 3

ossicles

Question 4

classes of echinodermata

Answer 4

Crinoidea, Ophiuroidea, Echinoidea, Asteroidea, holothuroidea

Question 5

examples of class Crinoidea

Answer 5

sea lillies

Question 6

examples of class Ophiuroidea

Answer 6

brittle stars, basket stars

Question 7

examples of class Echinoidea

Answer 7

sea urchins, sand dollars, sea biscuits

Question 8

examples of class asteroideas

Answer 8

sea stars

Question 9

examples of class holothuroidea

Answer 9

sea cucumbers

Question 10

members of this class are unique in having an incomplete gut

Answer 10

ophiuroidea

Question 11

jaw like structure in Echinoidea for feeding

Answer 11

Aristotle’s lantern

Question 12

tube feet are present in the

Answer 12

ambulacral groove