Across
- 5. is the organ system that takes in food, digests it, and excretes the remaining waste.
- 7. cells that divide, enabling the plant to grow longer and develop specialized tissues.
- 9. the phase of the cell cycle during which the cell performs its normal functions and its genetic material is copied in preparation for the cell division.
- 10. of two identical strands of DNA that make up a chromosome.
- 12. It’s produced naturally by biological processes.
- 13. a group of specialized tissues containing proteins that can contract and enable the body to move.
- 15. structure in the cell nucleus made up of a portion of the cell’s DNA, condensed into a structure that is visible under a light microscope.
- 19. carry blood away from the heart.
- 20. the stage in the cell cycle when the cytoplasm divides to form two identical cells
- 21. a muscular tube connecting your mouth to your stomach.
- 24. food and churn it to continue the process of digestion
- 25. one of a pair of special cells in the epidermis that surround and control the opening and closing of each stomate.
- 28. cells that divide, enabling the plant to grow wider and develop specialized tissues in the stem.
- 30. mesophyll: a region of loosely packed cells containing chloroplasts, in the middle of a leaf; a type of ground tissue.
- 31. the layers of gases surrounding Earth.
- 32. a region's average weather conditions over a long period.
- 35. absorbs carbon dioxide from the atmosphere and stores the carbon in another form.
- 36. a specialized tissue that provides support and protection for various parts of the body.
- 39. a thin sheet of tightly packed cells that covers body surfaces and lines internal organs and body cavities.
- 40. system: the tissues covering the outer surface of the plant
Down
- 1. vascular tissue in plants that transports dissolved food materials and hormones throughout the plant.
- 2. vascular tissue in plants that transports water and dissolved minerals from the roots to the leaves and stems of the plant.
- 3. carry blood toward the heart.
- 4. system: the tissues responsible for conducting materials within a plant
- 6. It’s produced naturally by the reactions of bacteria in soil and water.
- 8. tissue on the surface of a plant that produces bark on stems and roots.
- 11. the system in a flowering plant, fern, or conifer that anchors the plant, absorbs water and minerals, and stores food
- 14. a thin layer of cells covering all non-woody surfaces of the plant.
- 16. is a group of diseases in which cells grow and divide out of control
- 17. the organ system that is made up of bones and skeletal muscle;
- 18. a process in which the result acts to influence the original process.
- 22. specialized tissue that conducts electrical signals from one part of the body to another.
- 23. the stage of the cell cycle in which the DNA in the nucleus is divided; the first part of cell division.
- 26. physically removing the cancerous tissueis sometimes the preferred way of treating cancer.
- 27. the short-term changes in the air for a given place and time
- 29. system: all plant tissues other than those that make up the dermal and vascular tissue systems
- 32. a layer of wax on the upper and lower surfaces of a leaf that blocks the diffusion of water and gases.
- 33. exist in very low concentrations in the atmosphere.
- 34. a layer of tall, closely packed cells containing chloroplasts, just below the upper surface of a leaf.
- 37. an opening in the surface of a leaf that allows the exchange of gases.
- 38. material in the nucleus of a cell that contains all of the cell’s genetic information.