Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
14 Cards in this Set
- Front
- Back
|
What are the five classes of cnidarians and their identifying characteristics? |
Anthozoa- Sea corals Hydrozoa- Man of war Scyphozoa- True jellyfish cubozoa-Box Jellyfish staurazoa- Star jellyfish |
|
|
What phylum do sea sponges belong to? |
Phylum: Porifera |
|
|
What is a choanocyte, what is it for? |
Cells that line the interior of asconoid, syconoid and leuconoid body type sponge. Cell layer found in sponges. |
|
|
What is a spicule? What is for? Where are they made? |
Mineralized substances calcium carbonate and silica, while others are made of an organic substance called spongin. |
|
|
What 3 cell types make up a sponge? |
Pinacocytes; choanocytes; amoebocytes |
|
|
What phylum are sea walnuts a member of? |
They are a member of a common genus (Mnemiopsis) |
|
|
What are the comb rows in ctenophora for? |
They are sticky substances used to catch prey when they come nearby. |
|
|
What is the life cycle of a cnidarian? |
They only have 2 stages. One is a free-swimming jellyfish medusa stage and the second is an attached polyp stage. |
|
|
What is a planula? |
A free-swimming coelenterate larva with a flattened, ciliated, solid body. |
|
|
What is a nematocyst? Cnidocyst? |
Nematocyst is a stinging organ. Cnidocyte is also known as a stinging cell. |
|
|
Are cnidarians sexual or asexual, explain? |
Some are asexual and sexual, depending on the medusa stage and polyp stage. |
|
|
Differences in gastrodermis/epidermis. |
The difference is the starting process of their lives. First stage. |
|
|
Sketch a simple drawing and identify the structures of Aurelia. |
|
|
|
Sketch a simple drawing and identify the structures of a sponge. |
|
