Across
- 1. angiosperm having two seed leaves and pollen grains with 3 grooves
- 3. phylum containing pines, firs and other conifers
- 4. plant with "naked" seeds
- 9. a mature ovary from a flower
- 11. nutritive tissue inside the seeds of flowering plants
- 13. seed leaf
- 15. flowering plant
- 18. phylum comprising flowering plants
- 19. the pollen-bearing part of a stamen
- 20. structure that forms when an ovule matures after a pollen grain reaches it and a sperm fertilizes the egg
- 21. phylum containing the Ginko tree
Down
- 2. a cluster of flowers
- 5. reproductive structure of angiosperms
- 6. a male reproductive organ in flowers consisting of an anther and filament
- 7. the stalk of a stamen
- 8. angiosperm having one seed leaf and pollen grains with a single groove
- 10. a plant spore from which a male gemetophyte develops
- 12. slender stalk between the ovary and the stigma
- 14. receptive end of a carpel where deposited pollen germinates
- 16. a plant spore that develops into a female gametophyte
- 17. a term for skin
- 22. male gametophyte of a seed plant