Thursday's Quiz

Question 1

What is the level of organization for Cnidaria?

Answer 1

a. tissue level

Question 2

How many tissue layers does Cnidaria have?

• no tissue
• two tissue
• three tissue

Answer 2

• diploblastic (two tissue)

Question 3

What kind of gut does Cnidaria have?

Answer 3

two-way gut

Question 4

What type of symmetry does Cnidaria have?

Answer 4

radial symmetry- cut in many different ways to achieve symmetry

Question 5

What is the body form of Cnidaria?

Answer 5

i. Epidermis
ii. Mesoglea
iii. Gastrodermis-lines the gastrovascular cavity (GVC)
iv. Cnidocytes- produce nematocytes
v. nematocyst- stinging organelle

Question 6

Define polyp

Answer 6

attached to the substrate

Question 7

What class has both polyp and medusa stage that is usually present?

• class hydrozoa
• class cubozoa
• class scyphozoa

Answer 7

class hydrozoa

Question 8

What class has a medusa that has a velum?

Answer 8

class hydrozoa

Question 9

What class has an extended manubrium?

Answer 9

class hydrozoa

Question 10

What class is classified as true jellies?

• class Anthozoa
• class Scyphozoa
• class hydrozoa

Answer 10

class Scyphozoa

Question 11

Which class has a polyp form only; no medusa?

Answer 11

class Anthozoa

Question 12

What class has a medusa that is dominant; reduced polyp?

Answer 12

class Scyphozoa

Question 13

What class has a medusa that has NO velum?

Answer 13

class Scyphozoa

Question 14

What class is known as sea wasps & box jellies?

• class Scyphozoa
• class hydrozoa
• class Cubozoa

Answer 14

class Cubozoa

Question 15

What class has diversity?

Answer 15

class Anthozoa

Question 16

body parts in sixes; sea anemones and hard corrals

Answer 16

i. subclass Zoanthania (Hexacoralia)

Question 17

body parts in eights; octocorals

Answer 17

Acyonaria (octocoralia)

Question 18

What class has a sting that is very toxic?

• class Anthozoa
• class Scyphozoa
• class Cubozoa

Answer 18

class Cubozoa

Question 19

What class has a box-shaped medusa?

Answer 19

class Cubozoa

Question 20

which class has a velum-like structure called a velarium?

• class Cubozoa
• class hydrozoa

Answer 20

class Cubozoa

Question 21

What class has a typical lifecycle?

Answer 21

Class Scyphozoa

Question 22

What is Scyphozoa’s lifecycle?

Answer 22

i. Sexual Medusa Stage-dioecious
ii. sperm or eggs
iii. zygote
iv. Planula larva-ciliated
v. Scyphistoma-young polyp
vi. Strobila-buds off ephyrae
vii. Ephyra- young medusa

Question 23

What class is know for sea anemones, corals?

Answer 23

class Anthozoa