Marine Botany 2025

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Across
  1. 5. The stealing of chloroplasts by sea slugs. The word is derived from “Kleptes” which is Greek for “thief”
  2. 7. In cyanobacteria and red algae, a hemispherical or discoidal structure on the surfaces of thylakoids that contains the pigment structures.
  3. 9. The order of green algae that is siphonous and multinucleate; contains genera such as Bryopsis
  4. 10. A proteinaceous region in the plastids of many types of algae; known in some cases to contain RUBISCO and commonly associated with formation of storage compounds; the number per cell may be used to differentiate Ulva species.
  5. 11. An alternation of sporic generations with distinctive gametophyte and sporophyte phases
  6. 15. The genus of dark-green, spiral-shaped cyanobacteria that contains phycocyanin and is used as a supplement because of its supposed health benefits.
  7. 17. A flagellate spore
  8. 18. The cell surface features of dinoflagellates that include the external cell membrane, alveoli, and thecal plates inside the alveoli (if it’s “armored”)
Down
  1. 1. Unicellular golden-pigmented cells (usually dinoflagellates) that are endosymbiotic in marine animals, including reef-building corals; probably the most common alga on tropical coral reefs.
  2. 2. A pigment that gives a golden-brown or brown pigmentation to diatoms, brown algae, and some other photosynthetic stramenopiles.
  3. 3. The most abundant benthic microalgal group in Charleston estuaries that serve as a food source, stabilize sediments, and are important for biogeochemical cycling
  4. 4. An elongate slit in one or both valves of many diatoms that allows for rapid movement
  5. 6. A compound that absorbs UV radiation and is yellow-brown in color in cyanobacteria
  6. 8. Red algae experienced an “evolutionary___________” – an event in which the population of red algae and their genomes shrank drastically.
  7. 12. The process by which one organism becomes stably resident within the cell or body of another, known as the host, to form a chimera; this theory explains the evolutionary origin of algal plastids
  8. 13. A blade composed of true tissue, such as Ulva
  9. 14. A cell produced by diatoms that undergoes enlargement, compensating for the reduction in size that often occurs during population growth; commonly also the zygote of diatoms.
  10. 16. A gelatinous polysaccharide extracted from the walls of various red algae that is used as a gelling agent and for microbial plates; the highest quality of this product is from Gelidium.
  11. 19. One of the major diatom frustule types; exhibits bilateral symmetry of valve ornamentation.
  12. 20. A condition whereby a species becomes excessively abundant, usually causing ecological or economic harm