Enter your Name:   Enter your E-mail Address:  Define the following terms: 01a. Benthos 01b. Nekton 01c. Plankton 02. Would you find larger or smaller sediment particle sizes in turbulent waters? Why? 03. Where are these organisms located among the benthos: infauna, epifauna, and meiofauna? 04. What are at least two differences between the muddy-bottom soft-shelf community and the sandy-bottom soft-shelf community? 05. Detritus is the main food source in a soft-bottom shelf community. Is it vegetated or unvegetated? 06. A teacher shows you just the bottom of a green marine organism. It has roots. Is it an alga or a seagrass? 07. Since few organisms feed directly on seagrasses, how does the community take advantage of all the food they provide? 08. A shelf community has very little infauna. Do algae or seagrasses most likely grow there? 09. Name two ways that algae can defend themselves from grazers. 10. A shelf community is cold and hard-bottomed. It has a lot of sediment constantly floating in it. Would you expect to find kelp to be plentiful here? 11. Why is the third dimension of a canopy important to kelp forest organisms? 12. You see a lot of dead, floating giant kelp washing up on shore. What is the most likely explanation for this? 13. A single cell from a giant kelp has two chromosomes for each pair. Would you expect the adult from which this cell came to be large or small?