Chapter 4 Crossward

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Across
  1. 2. Tide A discoloration of seawater caused by a bloom of toxic red dinoflagellates
  2. 4. The collection of small or microscopic organisms, including algae and protozoans
  3. 7. utilization of food by living things for growth and energy
  4. 8. organism that are unable to make their own food
  5. 10. The biochemical emission of light by living organisms
  6. 13. Reproduction production of offspring by one parent.
  7. 15. various chiefly aquatic, eukaryotic, photosynthetic organisms
  8. 16. Having or consisting of one cell; one-celled: unicellular organisms.
  9. 17. An autotrophic organism that serves as a source of food for other organisms in a food chain.
  10. 18. A photosynthetic bacterium of the class Coccogoneae or Hormogoneae
  11. 20. Any of various microscopic one-celled or colonial algae
Down
  1. 1. tide is a rapid increase or accumulation in the population
  2. 3. organisms that lack a nuclear membrane.
  3. 5. self feeder
  4. 6. Singled-celled and multi celled; have nuclei; absorb food from living and dead organisms
  5. 8. A single-celled organism with two flagella
  6. 9. other feeders; heterotrophic nutrition.
  7. 11. organism that are unable to make their own food
  8. 12. A single-celled or multicellular organism whose cells contain a distinct membrane-bound nucleus.
  9. 14. Reproduction two parents are needed.
  10. 19. The classification of organisms in an ordered system that indicates natural relationships