Across
- 4. All the different populations that live and interact in the same area.
- 6. Allows for movement, posture, and heat production.
- 8. Tissue that conducts sugars downward from the leaves.
- 12. Tiny pores in a leaf that allow for gas exchange.
- 14. A substance that has a molecular structure consisting chiefly of a large number of similar units bonded together.
- 15. The jelly-like substance filling the cell.
- 16. The control center (brain, spinal cord, nerves); processes sensory info.
- 17. The process by which the structure of a biological community evolves over time.
- 21. The female organs of a flower (stigma, style, and ovary).
- 25. Tissue that carries water upward from the roots.
- 27. A network of glands that secrete hormones to regulate metabolism and growth.
- 28. A microscopic single-celled organism that has neither a distinct nucleus nor specialized organelles.
- 29. Non-living physical and chemical elements in the ecosystem.
- 32. The exhalation of water vapor through stomata.
- 34. Relating to or resulting from living things.
- 35. The first stage of cell division, before metaphase.
- 37. The site of protein synthesis.
- 38. The male fertilizing organ of a flower.
- 40. A relationship where both species benefit.
- 41. Cell division that produces reproductive cells.
- 42. Consists of bones and cartilage; provides structure and protects organs.
- 43. The lungs and airways; responsible for gas exchange (oxygen in, CO2 out).
Down
- 1. A trait that helps an organism survive and reproduce.
- 2. Part of the immune system; drains fluid (lymph) and fights infection.
- 3. The tendency toward a relatively stable equilibrium.
- 5. Includes skin, hair, and nails; acts as the body’s first line of defense.
- 7. The stage where chromosomes move away from one another to opposite poles.
- 9. The powerhouse of the cell (classic crossword fodder).
- 10. Process by which plants turn sunlight into energy.
- 11. A relationship where one species benefits and the other is unaffected.
- 13. A group of individuals of the same species living in a specific area.
- 18. The process by which certain traits become more or less common (Natural or Artificial).
- 19. Organism whose cells contain a nucleus.
- 20. Green pigment responsible for the absorption of light.
- 22. An interaction where one organism (predator) kills and eats another (prey).
- 23. An organism that makes its own food (Autotroph).
- 24. Breaks down food into nutrients the body can absorb.
- 26. A specialized subunit within a cell.
- 30. (Also called Circulatory) The heart and blood vessels that transport nutrients and oxygen.
- 31. The stage where chromosomes become attached to the spindle fibers.
- 33. The resting phase between successive mitotic divisions of a cell.
- 36. A relationship where one species benefits (parasite) at the expense of the other (host).
- 39. Process of cell division resulting in two identical daughter cells.