Biology crossword

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).

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.