Vocabulary

1. a large opening that forms the excretory tract of the sponge
5. plants have sperate male and female plants.
6. an arrangement of chouancytes around a central cavity that directly communicates with the osculum
7. attached directly by its base without a stalk or peduncle.
9. plants are plants that have both male and female sexual organs or flowers
12. microscopic hair-like structures involved in the locomotion of a cell.
13. a minute slender pointed usually hard body
14. is usually microscopic, often less than one inch in length, but they also include larger species like some crustaceans and jellyfish
15. anything associated with or occurring on the bottom of a body of water
17. can withstand movements of water and changes in tides
18. valves to allow fluid exchange
21. having or concerned with the power or property of contracting

2. a sponge of the most complex structure
3. one of two principal body types occurring in members of the invertebrate animal phylum Cnidaria
4. sub-group of suspension feeding animals that feed by straining suspended matter and food
8. Spongin is the flexible material that makes up the body wall of the sponge
10. being in an early stage of development
11. the condition of having both male and female reproductive organs
14. swimming or crawling larval type common in many species of the phylum Cnidaria
16. the internal cavity of a sponge discharging by way of the osculum
19. the juvenile form of an insect.
20. a projecting growth of tissue from a surface in the body, usually a mucous membrane