Across
- 4. the seed _____ protects the seed
- 7. carbon ________ enters a plant; used for photosynthesis
- 8. contain horn-shaped sporophytes
- 11. the nutrient obtained from the soil
- 14. type of algae that may be the ancestors of plants
- 15. vascular tissue that brings water from roots to the whole plant
- 16. life cycle stage that produces spores
- 20. needle-like branches that grow in a circle
- 21. seedless, vascular mosses known as princess pines
- 22. the leaves of a fern
- 23. tissue in stems that produces xylem and phloem
- 25. the green pigment in plants
- 27. a plant's means of surviving on land
- 28. a rigid stem
- 29. grains that later become sperm cells
- 32. a soft stem
- 33. contains the tissue that becomes a young plant
- 35. life cycle stage that produces gametes
- 37. structures in mosses to soak up nutrients
- 38. anchors of the plant
- 39. tell the age of a tree; made of xylem tissue
Down
- 1. waxy covering of leaves that reduces water loss
- 2. number of chromosome sets in a gametophyte
- 3. low-growing plants that lack xylem and phloem
- 5. number of chromosome sets in a sporophyte
- 6. xylem and phloem are this type of tissue
- 9. the gas that exits a plant
- 10. contained in a seed that develops into a young plant
- 12. the autotrophs that are eukaryotes and contain cell walls
- 13. a fertilized egg
- 16. openings in a leaf that allow gases to enter and exit
- 17. vascular tissue that brings sugar from leaves to the whole plant
- 18. form of reproduction that produces a zygote
- 19. the root ______ protects the root
- 24. contain a stalk with capsule as the sporophyte
- 25. seed leaves that provide food for the embryo
- 26. seedless, nonvascular plants shaped like a liver
- 30. when a seed grows from an embryo and lives in its environment
- 31. the seedless, vascular plants often used for decorations
- 34. gametes in a plant include the sperm and _____ cells
- 36. when water evaporates from a plant's leaves