Protozoa Vocab

2. Structures used by radiolarian's to aid in controlling their depth in the water column.
3. A type of radiolarian skeleton composed of silicon.
4. The area from the water surface to the bottom.
7. Inhabiting the open water of the ocean, rather than the bottom of the shore.
9. A "false foot", formed by an extension of cytoplasm.
10. An ocean bottom sediment consisting of 30 percent or more foram skeletons.
13. A "container" within which a tintinnied lives.
14. An organic matrix with embedded grains of sand.
16. The outer portion of the radiolarian's cytoplasm.
17. A vertical, cylindrical sample of the bottom sediments.
18. Tiny, hairlike projections.
19. The relationship in which 2 organisms live together in close association.
21. Symbiotic one-celled algae found in coral, sea anemones, mollusks, and other types of marine organisms.
24. A foram that secretes a single chamber.

1. The process of using food material produced by other organisms.
2. The inner portion of the radiolarian's cytoplasm that is nucleated.
5. Bottom dwelling organisms.
6. The process by which a species becomes better suited to survive in an environment.
8. A hard,outer covering.
11. A foram that secrets several chambers.
12. A type of radiolarian skeleton which is delicate and lace like.
15. Small plants and animals floating in the upper layers of the water column.
20. A slimy lubricating and cleansing secretion.
22. Very small particles of the decaying remains of dead plants and animals.
23. Small cavities that may contain secretions of the protoplasm or substances about to be exreted.