Enter your Name:   Enter your E-mail Address:  Define the following terms: 01a. Bacteria 01b. Decomposers 01c. Phytoplankton 01d. Zooplankton 01e. Thallus 01f. Haploid 01g. Diploid 01h. Symbiosis 02. What are two processes that autotrophic bacteria can use to convert energy into organic matter? 03. Why aren't cyanobacteria considered algae? 04. List two ways diatoms benefit humans. 05. While hiking, you find a large amount of abrasive, whitish powder on the side of a mountain. Your guide says it is made up of tiny fossilized bits of silica. How do you know that this area was probably once under the ocean? 06. Why won't some restaurants serve fish harvested in areas of planktonic blooms? 07. What is the function of the pneumatocysts on a thallus? 08. Which type of algae (green, brown, or red) provides merchants with the emulsifying agent called algin? What does algin do? 09. A seaweed that follows the alternation of generations life cycle produces haploid (ln) spores. Into what type of generation will those haploid spores develop: sporophyte or gametophyte? Will that new generatin be haploid or diploid? 10. What two types of organisms are associated with one another in a lichen? 11. Why don't the seagrasses need large, showy flowers? 12. What part of the red mangrove can help to accumulate sediment buildup?