Chapter 06 - Multicellular Primary Producers: Seaweeds and Plants

Chapter 06 Multicellular Primary Producers: Seaweeds and Plants

Multiple Choice Questions

1. Algaes are included among the Protista. Some biologists, however, place them instead in the: A. Kingdom Animalia. B. Kingdom Fungi. C. Kingdom Plantae. D. Prokaryotes. E. Seagrasses.

2. Algaes and many bacteria are primary producers. In contrast to the types of the bacteria that are primary producers, however, all types of algaes are: A. Are photosynthetic. B. Are chemosynthetic. C. Are prokaryotic. D. Have true leaves and roots. E. Are unicellular.

3. Macroalgaes can be best differentiated from the phytoplankton because the marcoalgaes: A. Are eukaryotic. B. Are photosynthetic. C. Have true roots. D. Are mostly multicellular. E. Have true leaves.

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4. Macroalgae/seaweeds can be best differentiated from true plants because macroalgae/seaweeds: A. Are photosynthetic. B. Are prokaryotic. C. Have no true roots, leaves, or stems. D. Have no chlorophyll. E. Are mostly unicellular.

5. The root-like, anchoring structure of many macroalgae/seaweeds is called the: A. Blade B. Pneumatocyst C. Thallus D. Holdfast E. Stipe

6. The thallus of a macroalgae/seaweed refers to its: A. Anchoring structure. B. Gas-filled bladders. C. Stem-like part of the body. D. Complete body. E. Leaf-like structures, or blades.

7. The stem-like structure of a macroalgae/seaweed such as kelp is called the: A. Blade. B. Pneumatocyst. C. Stipe. D. Holdfast. E. Thallus.

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8. Which one of these groups of algae is found mostly in fresh water and on land, thus, only a small number of this group are actually marine: A. Green algae. B. Brown algae. C. Kelps. D. Red algae. E. Coralline red algae.

9. Green algaes are characterized by: A. Being prokaryotic. B. Being mostly marine. C. Having chlorophyll plus red pigments. D. Having true roots. E. Having pigments similar to land plants.

10. The most complex and largest of all the macroalgaes/seaweeds is included among one of these groups: A. Green algae. B. Brown algae. C. Coralline red algae. D. Calcareous green algae. E. Red algae.

11. The Sargasso Sea is found in the: A. Pacific Ocean. B. Black Sea. C. Indian Ocean. D. Atlantic Ocean. E. Arctic Ocean.

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12. Coralline red algae receive this name due to their ability to: A. Emit light. B. Accumulate calcium carbonate. C. Be responsible for red tides. D. Live together with corals in coral reefs. E. Be parasites of other algae.

13. The group of macroalgaes/seaweeds with the largest number of species is the: A. Green algae. B. Brown algae. C. Kelps. D. Red algae. E. Coralline algae.

14. Encrusting algae are commonly found living: A. In the plankton. B. On rocks. C. As parasites. D. As endophytes. E. On the water surface.

15. Algin is a natural product extracted from seaweeds. It is used as: A. An emulsifier in processed foods. B. A paper substitute. C. An insecticide. D. An explosive. E. An antibiotic.

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16. A gelatinous substance extracted from algaes and used as a growth media in microbiology labs is: A. Algin. B. Pollen. C. Agar. D. Carrageenan.

17. Reproduction in seaweeds can be very complex. It generally includes: A. Only sexual reproduction. B. Only asexual reproduction. C. Both sexual and asexual reproduction. D. Only mitosis. E. Only meiosis.

18. Marine vascular flowering plants include all of the following except: A. Mangroves. B. Kelps. C. Seagrasses. D. Cord grass. E. Surf grass.

19. Marine flowering plants can be best differentiated from macroalgaes/seaweeds by the fact that the marine flowering plants: A. Have smaller flowers. B. Must be covered by water at all times. C. Must reproduce in the water. D. Can only live along rivers near the coast. E. Reproduce by producing seeds.

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20. Salt-tolerant plants such as salt-marsh plants are called: A. Mangroves. B. Angiosperms. C. Gametophytes. D. Halophytes. E. Sporophytes.

21. Mangroves live in coastal waters that: A. Are well protected from strong wave action. B. Have high salinity at all times. C. Are located in temperate regions with wide seasonal temperature fluctuations. D. Have high amounts of nutrients. E. Are rocky with no sedimentation.

22. Which of the following areas are associated with myths and legends of sea monsters and ghost ships? A. The California kelp forrests B. The salt marshes of the Middle Atlantic states C. The Sargasso Sea D. Mangrove forests along the Amazon River delta

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