Sponges Flashcards
What does Porifera refer to, or mean?
Porifera refers to an organism or animal with pores.
Sponges are multicellular. What does this mean?
It means that sponges have more than one cell in their bodies.
True or False?
There are more than 4,000 species of sponge.
True.
There are over 5,000 species.
What climate do most sponges live in?
Salt water- anywhere from the intertidal zone to the deep sea.
Sponges are sessile. What does this mean?
It means that they are stationary, or that they cannot move.
Why are sponges often mistaken for plants?
They have no mouth, organs, muscles, nerves or digestive cavity.
Why are sponges not considered plants?
They do not produce their own food.
Ostia and Oscula
What are they for?
What is the difference?
They are pores in the body that filter water.
Ostia - water flows in
Oscula - water flows out
How do sponges stand up strait without a skeleton?
They are made up of small and hard
Spicules.
What are spicules?
Small hard substances in sponges that help them stand up strait.
A sponge is a filter feeder,
What is a filter feeder?
And organism that eats mostly plankton.
What is the purpose of collar cells?
They cause water to flow through the sponge.
What do collar cells have that helps water circulate through the sponge?
Flagellum
What is the difference between sexual and A-sexual reproduction?
Sexual reproduction has to do with egg and sperm. A-sexual reproduction happens when sponges go through a process called budding.
Describe “budding”.
Budding is when a new sponge grows from a section of sponge that falls off a parent sponge.
