Name ______________________
Date ______________________
 
Phylum Porifera
 

Answer the following questions completely:

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.

 
 
 
 
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.