Phylum Porifera
Write the questions out completely. You should be able to refer to you answers as a study source!
1. Since there is no real tissue in the sponge, it is classified in the subkingdom _____________________.
2. Sponges usually stay in one place all their lives. This condition of non-movement is called being
_______________.
3. The shape of an organism is called its ___________________.
4. The sponge body contains many different cells working together to carry out its life functions. The
__________________ and ___________________ are the two cells responsible for its digestion of solid food.
5. The phylum name Porifera refers to the many pores located all over the sponge's body. The __________
pores allow the water into the central cavity of the animal, while the ________________ allows the water to
leave its body.
6. The jelly-like material called __________________ is the material which allows the cells to collect and form
the sponges body.
7. Many times tiny bone-like ___________________ are found sticking out of this jelly-like material. These
___________________ are made of several different substances. The clear glassy ones are made of
_________________________, while the white ones are made of __________________________.
8. These bony-like structures are made by the wandering formless cells called the ___________________.
9. The outer covering of every sponge is constructed of cells called the _________________________.
10. Sponges primarily reproduce asexually. The process of _________________ occurs when a new sponge
develops from the side of the older sponge.
11. If the sponge is cut up into many pieces, each piece will grow back the missing parts; this is called
____________________________.
12. The currents of water that pass through the sponge's body is caused by the ___________________ of the
collar cells.
13. Sometime sponges form ____________________ from spicules and amebocytes.
14. Explain the term filter feeder
15. Label the cellular level of the sponge. Draw the picture!
16. Discuss why the sponge is placed in the subkingdom Parazoa.
17. Discuss how the sponge carries out the following life functions: Respiration, Circulation, Excretion, and
Digestion.
Digestion
Respiration
Circulation
Excretion
18. Label the external structures of the sponge. Draw the picture!