Across
- 1. the central part of an ovule, containing the embryo sac
- 6. a sticky flammable organic substance, insoluble in water, exuded by some trees and other plants
- 7. is a leaf that bears sporangia
- 10. division of plants, grouped within the gymnosperms that consists of some 70 species across the three relict genera
- 11. a plant that has seeds unprotected by an ovary or fruit
- 12. A division of trees comprising the ginkgos
- 13. the protective outer coat of a seed.
Down
- 2. palmlike gymnosperms
- 3. a flowering plant's unit of reproduction, capable of developing into another such plant.
- 4. having the male and female reproductive organs in separate individuals
- 5. microscopic body that contains the male reproductive cell of a plant
- 8. division of vascular land plants containing a single class, Pinopsida
- 9. a tough outer protective layer, especially that of an animal or plant