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Across 3. Response to changes in the length of a day 11. Cylindrical grouping of phloem and xylem (2 wds) 14. Conducts nutrients throughout the plant 15. Plants with vascular bundles that are organized in rings and netlike leaf veins 16. Lengthening of young shoots and roots (2 wds) 18. Thickening of stems and roots (2 wds) 19. Lateral meristem that forms a cylinder inside older roots and stems (2 wds) 23. Pores on the leaf surface that control water conservation and gas exchange 24. Type of tropism that can cause vine tendrils to wrap around an object 28. Swollen mass of bacteria infected root cells 29. Dead tissue at maturity that supports the vascular tissue 31. Region of undifferentiated cells 32. Haploid form of a plant responsible for pollen production 33. Soil that is nutrient, oxygen and water rich 34. Plant Hormone that stimulates ripening of fruit 35. Period of arrested growth that is triggered by environmental cues 36. Fiber that is the main component of sclerenchyma 37. Moist still-functional xylem between heartwood and cascular cambrian 38. Single layer of cells that secrete the waxy cuticle 39. Male part of a flower

Down 1. Cycle of activity throughout a 24 hour period (2 wds) 2. Plant hormone that stimulates seed germination and cell division in the stem 4. Plant response to sunlight 5. Seed containing mature ovary 6. Plant system that carries water and nutrients throughout the plant (2 wds) 7. Female portion of a flower 8. Nutrient essential for seed and flower production 9. Photosynthetic petal responsible for protecting the flower's reproductive parts 10. Conducts water and minerals throughout the plant 12. Plant Hormone that stimulates fruit development 13. One of three nutrients that are never deficient because of abundance in the atmosphere 17. Plant system responsible for photosynthesis, structural support and nutrient storage (2 wds) 20. Stretchable tissue that supports rapid growth 21. Animals that are attracted by bright petal colors such as red and purple 22. Tissue that makes up most of the soft primary growth 25. Photosynthetic tissue 26. Mutualistic relationship between roots and fungus 27. Portion of wood that consists of clogged xylem that strengthens and darkens the wood 28. Fine extensions that increase surface area of the root system (2 wds) 30. Plants that have vascular bundles scattered vascular bundles and parallel leaf veins