Thursday's Quiz Flashcards
What is the level of organization for Cnidaria?
a. tissue level
How many tissue layers does Cnidaria have?
- no tissue
- two tissue
- three tissue
- diploblastic (two tissue)
What kind of gut does Cnidaria have?
two-way gut
What type of symmetry does Cnidaria have?
radial symmetry- cut in many different ways to achieve symmetry
What is the body form of Cnidaria?
i. Epidermis
ii. Mesoglea
iii. Gastrodermis-lines the gastrovascular cavity (GVC)
iv. Cnidocytes- produce nematocytes
v. nematocyst- stinging organelle
Define polyp
attached to the substrate
What class has both polyp and medusa stage that is usually present?
- class hydrozoa
- class cubozoa
- class scyphozoa
class hydrozoa
What class has a medusa that has a velum?
class hydrozoa
What class has an extended manubrium?
class hydrozoa
What class is classified as true jellies?
- class Anthozoa
- class Scyphozoa
- class hydrozoa
class Scyphozoa
Which class has a polyp form only; no medusa?
class Anthozoa
What class has a medusa that is dominant; reduced polyp?
class Scyphozoa
What class has a medusa that has NO velum?
class Scyphozoa
What class is known as sea wasps & box jellies?
- class Scyphozoa
- class hydrozoa
- class Cubozoa
class Cubozoa
What class has diversity?
class Anthozoa
body parts in sixes; sea anemones and hard corrals
i. subclass Zoanthania (Hexacoralia)
body parts in eights; octocorals
Acyonaria (octocoralia)
What class has a sting that is very toxic?
- class Anthozoa
- class Scyphozoa
- class Cubozoa
class Cubozoa
What class has a box-shaped medusa?
class Cubozoa
which class has a velum-like structure called a velarium?
- class Cubozoa
- class hydrozoa
class Cubozoa
What class has a typical lifecycle?
Class Scyphozoa
What is Scyphozoa’s lifecycle?
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
What class is know for sea anemones, corals?
class Anthozoa
