Across
- 2. produces offspring by fusion of gametes
- 5. aggregates of soil particles
- 6. chiefly herbaceous angiospermous plant
- 10. step by step process
- 13. cell splits into 2 cell
- 14. two cotyledons
- 17. special type of diffusion
- 19. signal molecules produced
- 20. produces a genetically identical plants
Down
- 1. Tough outer cover of seed
- 3. the usually underground part of a seed plant body
- 4. process that starts cell division
- 7. zone of accumulation of rain water
- 8. plant's stalk
- 9. increase of salt concentration
- 11. leafy parts of tree or plant
- 12. substance added to soil
- 15. made of minerals and decompsed matter
- 16. central vein of a leaf
- 18. material plants grow in
- 19. organic component of soil