Glossary of terms for Task 6

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Across
  1. 6. A close and often long-term interaction between organisms of different species.
  2. 7. The transfer of pollen from the male part of a flower to a female reproductive structure, allowing fertilisation to occur.
  3. 12. consumer An organism that feeds directly on producers.
  4. 13. A symbiotic relationship in which one organism benefits while the host organism is harmed.
  5. 15. chain A sequence showing how energy and nutrients pass from one organism to another through feeding.
  6. 16. An organism that obtains food by eating other animals.
  7. 17. factor A non-living part of an ecosystem that can affect organisms, such as temperature, water, light or soil.
  8. 19. cycle The movement of carbon between organisms, the atmosphere, water, soil and rocks.
  9. 20. An organism, such as a bacterium or fungus, that breaks down dead organisms and wastes and returns nutrients to the environment.
  10. 24. An organism that makes its own organic food, usually through photosynthesis.
  11. 28. A symbiotic relationship in which one organism benefits while the other is neither significantly helped nor harmed.
  12. 29. web A network of interconnected food chains showing feeding relationships within an ecosystem.
  13. 30. level The feeding position occupied by an organism in a food chain or food web.
Down
  1. 1. Small drifting aquatic animals and animal-like organisms that commonly feed on phytoplankton.
  2. 2. An organism that is hunted and eaten by a predator.
  3. 3. A community of living organisms and the non-living environment with which they interact.
  4. 4. Microscopic structures produced by the male parts of flowers that contain the male reproductive cells.
  5. 5. factor A living component of an ecosystem, or an interaction involving living organisms.
  6. 8. A sugar-rich liquid produced by flowers that provides food for animals such as bees.
  7. 9. fuel A carbon-rich fuel, such as coal, oil or natural gas, formed from ancient organic material over millions of years.
  8. 10. cycle The movement and recycling of chemical substances between living organisms and the non-living environment.
  9. 11. An organism that hunts, kills and eats another organism.
  10. 13. The process by which producers use light energy to make organic molecules from carbon dioxide and water.
  11. 14. All the individuals of the same species living in a particular area at the same time.
  12. 16. capacity The maximum population size that an environment can support sustainably with its available resources.
  13. 18. plant A plant that traps and digests animals, usually insects, to obtain additional nutrients.
  14. 21. transfer The movement of energy from one organism or trophic level to another through feeding.
  15. 22. Microscopic photosynthetic organisms that float in aquatic environments and act as producers.
  16. 23. A symbiotic relationship in which both organisms benefit.
  17. 25. The cellular process that releases usable energy from organic molecules and normally releases carbon dioxide.
  18. 26. An organism that obtains energy and nutrients by eating other organisms.
  19. 27. predator A predator at the highest trophic level of a food web that has few or no natural predators.