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Across 2. transfer of pollen to the stigma 4. stem segments between nodes 7. fusion of gametes. 8. pore that is responsible for gas exchange in plants. 9. this system is composed of stems, leaves, and reproductive structures. 11. This layer is crucial for plant growth due to its high nutrient content. 12. this tissue type provides rigidity to plants. 13. main central root with smaller lateral roots 15. tissue type that provides storage and photosynthesis

Down 1. phototropism 3. ______ tissue covers the outer surface 5. in this type of plant, vascular bundles are scattered throughout the stem. 6. in this type of plant, vascular bundles are arranged in a ring. 7. densely packed roots 10. point of leaf attachment 14. the _____ bud is responsible for primary growth in branches.