Porifera and Cnidarian Unit Flashcards
What type of symmetry does a cnidarian have?
Radial Symmetry
When a sponge strains out all the water so that it can obtain nutrients and food from it
Filter feeder
How do cnidarians eat?
Catch fish with their tentacles and consume it in their mouths, digesting it in their gastrovascular cavity
When both sexes form in the same organism
Hermaphrodites
How does an adult sponge move?
They don’t, they are sessile
What type of cell tissue structure does a cnidarian have?
Endoderm and Ectoderm
Why are cnidarians ecologically important?
-Predators and prey
-Symbiosis with other organisms
A piece of the sponge breaks off, settles somewhere new, and forms a new sponge
Fragmentation Break-off
When a small bud forms on the exterior of a sponge, and breaks off as a new sponge
Budding
How does a sponge larvae move?
Free-swimming
How do cnidarians reproduce sexually?
Cross-Fertilization
When egg and sperm are produced into the water at different times, and eventually mix together to form a new organism
Cross-Fertilization
What type of body cavity does a sponge have?
No coelom
What type of symmetry does a sponge have?
Asymmetry
How do sponges reproduce sexually?
Hermaphrodites and Cross-Fertilization
