Echinoderms

Question 1

name the 5 phyla belonging to deutorostomia

Answer 1

Echinodermata, Chordata, Hemichordata, Chaetognatha, Lophophorate phyla

Question 2

3 Lophophorate

Answer 2

Phoronida, Ectoprocta, Brachiopoda

Question 3

It is a branch of the animal kingdom sharing features like anusn developing from or near the blastophore, the mouth developing elsewhere, coelom budded off from archenteron, radial and regulative cleavage, and endomesoderm derived from enterocoelic pouches

Answer 3

Deutorostomia

Question 4

has bilateral symmetry and undergoes metamorphosis to an adult with radial symmetry

Answer 4

echinoderm larva

Question 5

characteristics of echinoderms

Answer 5

• endoskeleton of calcareous ossicles
• water vascular system
• dermal brachiae or papulae
• pedicellariae

Question 6

adult echinoderm weight

Answer 6

up to 10kg

Question 7

what type of asexual reproduction occurs in fissiparous asteroids, ophiuroids and holothurians

Answer 7

body fission

Question 8

body fission as a form of asexual reproduction occurs in

Answer 8

fissiparous asteroids, ophiuroids, holothurians

Question 9

how do echinoderms obtain their foods

Answer 9

• scavenging
• grazing
• gross substrate swallowing
• suspension feeding
  -selective substrate ingestion or predation

Question 10

for the _ gas exchange occurs through the skin and tube feet and by respiratory tree

Answer 10

holothurians

Question 11

for the _ gas exchange occurs through the skin and tube feet and by bursae

Answer 11

ophiuroids

Question 12

6 extant classes of echinoderms

Answer 12

• Crinoidea
• Concentricycloidea
• Asteroidea
• Ophiuroidea
• Echinoidea
• Holothuria

Question 13

name 2 Crinoidea

Answer 13

• sea lilies
• feather stars

Question 14

name 1 Concentricycloidea

Answer 14

sea daisies

Question 15

name 1 Asteroidea

Answer 15

• sea stars or star fish

Question 16

name 2 Ophiuroidea

Answer 16

• brittle stars
• basket stars

Question 17

name 3 Echinoidea

Answer 17

• sea urchins
• sea biscuits
• sand dollars

Question 18

name 1 Holothuria

Answer 18

sea cucumbers

Question 19

when was the Concentricycloidea described, where was it discovered, how deep in the waters was it discovered

Answer 19

• 1986
• New zealand
• 1000 m-deep

Question 20

what side is the mouth

Answer 20

oral side

Question 21

opposite side of the oral side

Answer 21

aboral side