Biology Semester 1 Terms

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Across
  1. 6. an environmental factor that influences the survival and reproduction of organisms within a population
  2. 8. the controlled application of fire used to restore health to ecosystems
  3. 9. a small opening which is surrounded by two guard cells and through which moisture and gases pass in and out of the surface of a leaf.
  4. 14. the weight or total quantity of living organisms
  5. 15. a biological community of interacting organisms and their physical environment.
  6. 17. the movement of water across a membrane
  7. 20. organic compounds of simple sugars that living things use for energy and cell structure.
  8. 22. the process by which a species becomes fitted to its environment over generations
  9. 24. a solution that has a high solute concentration and low water concentration
  10. 26. the most abundant pigment in plants, responsible for their green color.
  11. 28. the variety of all living organisms on Earth
  12. 29. the sum of all processes by which water moves from the land surface to the atmosphere
  13. 30. the process for which organisms that are more adapted to the environment are more likely to survive and reproduce.
  14. 33. the process of using food and oxygen and turning it into usable energy.
  15. 34. the interaction between organisms or species where they strive for the same limited resources
  16. 36. an organism that obtains energy by eating other organisms
  17. 38. the order of events in an ecosystem, where one living organism eats another organism, and later that organism is consumed by another larger organism
  18. 39. an organism that has a large effect on its environment
Down
  1. 1. a non-native organism that can cause harm to the environment
  2. 2. the movement of any particles from a region of higher concentration to a region of lower concentration
  3. 3. the maximum number of individuals of a particular species that an environment can sustainably support over time.
  4. 4. a herbivorous animal that eats grass and herbs
  5. 5. differences among individuals within the same population
  6. 7. any abiotic or biotic factor that limits the number or reproduction of species in an ecosystem.
  7. 10. a model that shows the flow of energy from one trophic, or feeding, level to the next in an ecosystem
  8. 11. an organism that feeds of dead matter
  9. 12. living, composed of living things.
  10. 13. water that exists underground beneath the land surface
  11. 16. the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.
  12. 18. spontaneous changes in an organism's genetic material
  13. 19. a solution that has low solute concentration and high water concentration.
  14. 21. not living, composed of living things.
  15. 22. a characteristic that helps an organism survive and reproduce in its environment.
  16. 23. a prolonged period of abnormally low rainfall, leading to a shortage of water.
  17. 25. the organelle in a plant cell in which is the process by which photosynthesis occurs
  18. 27. the ability of living systems to maintain a stable internal environment
  19. 31. a gas used by plants/trees to make sugars
  20. 32. the process of passing traits from parents to their offspring
  21. 35. a gas generated by plants/trees
  22. 37. an organisms that creates its own energy