Reading...
Play button
Play button
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;
37 Cards in this Set
- Front
- Back
|
What is the main and only animal in the phylum Porifera?
|
Sponges
|
|
|
What phylum do sponges belong to?
|
Porifera
(Por-i-fera) |
|
|
What does Porifera mean?
|
"Pore bearing"
|
|
|
What kind of feeders are sponges/Porifera?
|
Filter-feeders
|
|
|
What kind of digestion do Porifera/sponges have?
|
Intracelluar
|
|
|
What are the specialized cells called that trap food in the sponge's body cavity?
|
Choanocytes
(Cho-ano-cytes) |
|
|
What are the specialized cells in sponges/Porifera that finish off digestion?
|
Archaeocytes
(Arch-ae-o-cytes) |
|
|
Where does water leave sponges/Porifera?
|
Through the hole in the sponge at the top (Osculum - Os-cul-um)
|
|
|
Where does water enter sponges/Porifera?
|
Through the irregular-shaped pores in the sponge
|
|
|
What tiny structures on a sponge/Porifera channel water into the organism?
|
Flagella
(Flag-ella) |
|
|
What are the two ways in which sponges/Porifera reproduce?
|
Sexually and Asexually
|
|
|
Are sponges male or female?
|
They are both (that sounds really odd now that I think about it..); they contain egg and sperm
|
|
|
How do sponges reproduce asexually?
|
by budding
|
|
|
What are the two ways sponges reproduce?
|
-Budding
- Gemmales (grouping of Archaeocytes surrounded by spicule; occurs in unfavorable conditions) (Gem-males) |
|
|
What are adult Porifera/sponges referred to as?
|
"Sessile" (can't move)
(Ses-sile) |
|
|
When can sponges/Porifera move?
|
When they are larva they are motile until they anchor and grow into a new sponge
|
|
|
What are the major characteristics of a sponge/Porifera? (Not including the animal ones)
|
- No circulation of blood, only water moved in by flagellated by Choancytes
- soft sponges - mostly spongin - **Asymmetrical (A-sym-metrical) - harder sponges - more spicule content - have pores in irregular shapes - no gut, mouth, tissue, or organs |
|
|
What phylum means "stinging cells"?
|
Cnidaria
(Cn-i-daria) |
|
|
What are the four types of Cnidaria?
|
Hydra, Coral, Sea Anemones, and Jellyfish (Ane-mon-es)
|
|
|
What is the actual stinging cell called?
|
Cnidocyte
(Cni-docy-te) |
|
|
What is the barbed filament that shoots-out when touched in a Cnidocyte?
|
Nematocyst
(Nema-tocy-st) |
|
|
What are the three main steps for capturing and digesting food for a Cnidaria?
|
Sting, paralyze, gastrovascular cavity (gastro-vas-cular)
|
|
|
What kind of digestive system do Cnidoria have?
|
Intracelluar and Extracelluar
|
|
|
How do Cnidaria reproduce?
|
By sexual and asexual reproduction
|
|
|
What are the two phases of a Jellyfishes' life-cycle?
|
"Medusa" Phase and "Polyp" Phase (Pol-yp)
|
|
|
What are jellyfish known for being?
|
Prolific (having lots of offspring)
(Pro-lif-ic) |
|
|
What does the "Medusa" Phase look like?
|
A blob with its tentacles hanging down
|
|
|
What does the Polyp Phase look like?
|
An upside-down jellyfish
|
|
|
What kind of skeletons do some Cnidarians have allowing them to be able to inflate their tentacles with water? (Ex. Sea Anemones)
|
Hydrostatic Skeletons
(Hydro-static) |
|
|
What method of moving do some Cnidarians use?
|
Jet Propulsion
|
|
|
Where does water enter inside of a Cnidarian to allow it to move by jet propulsion?
|
Through the gastrovascular cavity
|
|
|
What type of symmetry do Cnidaria have?
|
Radial Symmetry
(Rad-ial) |
|
|
Is the Polyp Phase asexual or sexual?
|
Asexual
|
|
|
Is the "Medusa" Phase asexual or sexual?
|
Sexual
|
|
|
What are the "Medusa" and Polyp phases known as?
|
Body-Plans
|
|
|
What do Cnidarians have that are also known as stinging cells?
|
Cnidocytes
(Cni-doc-y-tes) |
|
|
What do Cnidocytes contain that are also known as poison-filled darts?
|
Nematocysts
(Nema-to-cysts) |
