Porifera, Ctenophora and Cnidaria

What does Porifera mean?
Phylum- "Pore-bearer" (sponge phylum)
1 of 17
What does sessile mean?
Attach to rocks or with root like structures in soft sediment (e.g. sand)
2 of 17
What are sponges?
Loosely organised animals, no symmetry, muscles or nervous system
3 of 17
What is a sponges body plan like?
A cluster of cells built around a water canal system, chimney like, jelly-like extracellular matrix with collagen and stiffened with silica or calcium carbonate
4 of 17
How do sponges feed?
Water passes through Ostia (opening in body cavity) by beating flagella drawing water and also capturing food particles from water
5 of 17
What type of cell is involved in feeding? (which cell has the flagellum and captures the food?)
Choanocytes
6 of 17
What can vary a sponges structural type?
The type of water current is in their environment
7 of 17
How do sponges reproduce?
Sexually, hermaphrodites, not self fertile, sperm sent out the osculum, ciliated larvae settle & develop into juveniles, can also be asexual
8 of 17
How do some sponges reproduce asexually?
By budding
9 of 17
How many classes are in the sponge phylum and what are they?
3, demospongia (most belong to this), hexactinella ('glass sponges'), Calcarea
10 of 17
What are ctenophores?
Phylum- Ctenophora, 'comb jellies'
11 of 17
Whats the body plan of a ctenophore?
2 cell layers separated by a gelatinous mesogloea
12 of 17
Where are ctenophores usually found?
Open sea
13 of 17
What type of gut do ctenophores have?
A complete through-gut
14 of 17
How do ctenophores move?
They use ctenes, which are cells with plates of cilia on
15 of 17
What are cnidaria?
Phylum- all aquatic
16 of 17
What is the body plan for cnidaria?
Diploblastic, 2 cell layers separated by mesogloea, mouth attached to blind gastrovascular cavity with 1 opening
17 of 17

Other cards in this set

Card 2

Front

What does sessile mean?

Back

Attach to rocks or with root like structures in soft sediment (e.g. sand)

Card 3

Front

What are sponges?

Back

Preview of the front of card 3

Card 4

Front

What is a sponges body plan like?

Back

Preview of the front of card 4

Card 5

Front

How do sponges feed?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Animal Kingdom resources »