Across
- 2. Sensory receptors that detect light or other electromagnetic energy
- 5. Small openings in leaves that allow gas exchange
- 6. Made of more than one cell
- 12. The variable that is measured in an experiment
- 14. Plant tissue that forms the protective outer layer
- 16. The body system that sends and receives signals to coordinate actions
- 17. The passing of traits from parents to offspring
- 19. Characteristics that are passed
- 23. Any individual living thing
- 26. Cells that have a nucleus and membrane-bound organelles
- 27. The ability of an organism to maintain stable internal conditions
- 29. A type of reproduction involving only one parent
- 30. The variable that is changed or manipulated in an experiment
- 31. Cells that do not have a nucleus or membrane-bound organelles
Down
- 1. Having two different alleles for a trait
- 3. The basic building block of DNA
- 4. A group of organs working together to perform a major function
- 7. The nitrogenous base that binds with thymine
- 8. Different forms of the same gene
- 9. Plant tissue that transports water, minerals, and sugars
- 10. Sensory receptors that respond to touch, pressure, or movement
- 11. Inherited behaviors that organisms are born knowing how to perform
- 13. squares Diagrams used to predict the outcomes of genetic crosses
- 15. The process by which plants use sunlight to make food
- 18. Having two identical alleles for a trait
- 20. The nitrogenous base that binds with guanine
- 21. Sensory receptors that detect chemicals such as taste or smell
- 22. Reproductive cells such as sperm and eggs
- 24. Plant tissue involved in photosynthesis, storage, and support
- 25. Plant organ that carries out photosynthesis
- 28. Single-celled prokaryotic organisms found in many environments