Porifera Flashcards
1
Q
Environment
A
Aqautic
2
Q
Body types
A
- Asconoid: Flagellated spongocoel
- Syconoid: Flagellated canals
- Leuconoid: Flagellated chambers
3
Q
Water path: Asconoid
A
- Ostia
- Spongocoel lined with choanocytes
- Single large osculum
4
Q
Water path: Syconoid
A
- Incurrent canals
- Prospyles
- Radial canals lined with choanocytes
- Apopyles
- Spongocoel
- Osculum
5
Q
Water path: Leuconoid
A
- Incurrent canals
- Flagellated chambers with choanocytes
- Excurrent canals
6
Q
Cell types
A
- Pinatocytes
- Porocytes
- Choanocytes
- Archaeocytes
7
Q
Pinatocytes
A
Epithelial type cells – protective and contractile
8
Q
Porocytes
A
only found in asconoid sponges
9
Q
Choanocytes
A
move H2O, collect food, phagocytosis
10
Q
Archaeocytes
A
transport food & O2 to other cells, receive particles for digestion from choanocytes, move through mesohyl
11
Q
Nutrition
A
Feed on particles suspended in water
12
Q
Respiration/excretion
A
Diffusion
13
Q
Locomotion
A
Adults are sessile and attached
14
Q
Reproduction
A
Sexual:
* Monoecious
* Viviparous
Asexual:
* Fragmentation, budding, gemmulation
15
Q
Reproduction process
A
- Sperm released in water
- Taken up by canal system
- Choanocytes phagocytize sperm and carry it to the oocytes
- Zygote is retained in parent
- Ciliated larvae are released
