Sponges Flashcards
Sponges are in what kingdom and phylum?
Kingdom Animalia Pylum Porifera
What did early biologists think sponges were?
Plants
Sponges are multi or uni cellular
Multicellular
Are sponges prokaryotes or eukaryotes?
Eukaryotes
What are the two body layers of sponges?
Epidermis(outer layer)
Gastrodermis(inner layer)
What type of symmetry do sponges have?
Asymmetrical
Why are adult sponges sessile?
The are attached to some surface
What do sponges eat?
Small bits of food, bacteria, algae, or protozoans
How do sponges get their food?
Filtering
How does water enter a sponge?
They rotate the flagella in a circular motion this sucks water into the sponge
What is the job of the amebocyte?
Distributes food and oxygen to epidermis cells
What gives the sponge support?
Spongin and spicules
What are tiny sponges growing from the body of the sponge called?
Buda
What is a gemmule?
A group of amebocyte so covered by a hard outer covering
What is a hermaphrodite?
They produce eggs and sperm
What is the jellylike layer between the two skin layers called?
Mesohyl
What cells move in the Mesohyl delivering food and oxygen to other cells?
Amebocytes
What part of the collar cell pulls in water?
Flagella
What are collar cells called?
Choanocytes
What level of organization of sponges is missing?
They don’t have tissue or organs
How do sponges reproduce?
Sexually and asexually
Do sponges federalize their own eggs?
No
When do sponges release gemmules?
After an adult sponge dies
