Spicules • Which of the following is made of calcium carbonate or silicon dioxide that are often shaped like spikes? • spicules b. ostium c. choanocyte d. osculum
Budding Sponges reproduce asexually by ___________. a. budding b. internal fertilization c. hermaphroditic intercourse
Choanocytes • Which of the following cells traps from the water in order for the sponge to filter the food? • a. amoebocytes b. choanocytes c. gemmules d. none of the above
Mesenchyme • Amoebocytestake digested food through the __________ to other cells in the sponge. • a. endodermis b. epidermis c. mesenchyme
fragmentation • _____________ is an example of asexual reproduction in which mitotic cell division occurs. • a. fragmentation b. gemmules c. amoebocytosis
Little need for sunlight • What allows sponges to live at great depths where most organisms would die? a. extra chlorophyll b. little need for sunlight c. extra nutrients in the water
spongocoel The inside of the body cavity of a sponge is known as ___. • spongocoel b. acoelomate c. asymmetry
leucon • Which of the body structures is very common and is the largest of all the sponge body structures?
Endoderm • The inner layer of the sponges cell makeup is the ____. • a. epiderm b. ectoderm c. endoderm
Osculum • During sexual reproduction, sperm and egg are released into the water through the sponge’s ____. • a. ostium b. osculum c. epiderm
Food, amoebocytes, spicules • Identify 3 things that are contained in a gemmule.
Sycon • Which body type of sponges is slightly larger, thicker and more complex than an asconoid?
ascon • Which of the sponge body types is the simplest and the least common?
Coralline sponges The common name for sponges in class Sclerospongiae is __________.
Hexactinellida • The spicules of this class are made of silica and have 6 points & look like stars.
Demospongiae • This is the largest class of sponges. 90% of all sponges belong to this class.
Calcarea • The common name for this class is calcareous sponges. This class can be all 3 body types.
Demospongiae • The spicules of this class of sponges can be made of spongin, silica or both. These sponges have a leucon body structure.
1. Pick up food from choanocytes2. finish digestion3. take food and oxygen through the mesenchyme to the rest of the cells • Identify IN ORDER the 3 jobs of the amoebocyte.
Both male and female reproductive organs • What does it mean to be a hermaphrodite?
Mostly asymmetry but can be radially symmetrical • What type of symmetry do sponges have?
They live attached and cannot move • Why are adult sponges said to be sessile animals?
Pore-bearing • What does Porifera mean?
Amoebocytes, food, protective spicules • What 3 parts comprise a gemmule?
Parazoa • To what SUBKINGDOM do sponges belong?
Demospongiae • If you were to buy a real sea sponge commercially, what class of sponges would be involved?
Barrel sponge • WHAT IS THE COMMON NAME OF THE SPONGE IN THE BACKGROUND OF THIS SLIDE?
Spicules have electronic receivers Primitive liquid known as syncitia makes tissues cannot contract or constrict • Name 3 things that makes the class Hexactinellida special?
2 • Sponges have ___ cell layers.
Endoderm and epidermis • Name the 2 cell layers of sponges from inner to outer layer.
Water out Osculum epidermis Water in Holdfast
Water out through osculum Choanocyte Flagellum Water in through porocyte spicule spongocoel Amoebocyte epidermis mesenchyme