review 7th grade

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Across
  1. 2. A organelle in plant cells that creates energy for the plants
  2. 4. group of similar tissues with similar functions
  3. 8. Traits that do not appear in the presence of dominant alleles
  4. 10. where organisms genetic information is in
  5. 12. Where all a cells DNA is located
  6. 14. when organisms keep their body at a equilibrium state
  7. 17. study of genes and heredity
  8. 19. Around a plant cell and not a animal cell
  9. 21. group of similar cells with similar functions
Down
  1. 1. a change in a organism where they are better suited to their environment
  2. 3. Group of organs working together
  3. 5. Stimulus that occurs inside the body
  4. 6. a quality or characteristic of a organism
  5. 7. Power house of the cell
  6. 9. stimulus that occurs outside the body
  7. 11. Tool used to discover cells
  8. 13. Traits that will always appear no matter what
  9. 15. an action that creates a response from a organism
  10. 16. made up of DNA, is the basic unit of heredity
  11. 18. smallest unit of life in a organism
  12. 20. the passing of traits from one generation to the other