Across
- 5. a vascular plant having seeds that are not enclosed in an ovary; a conifer or cycad
- 7. grain a single granule of pollen
- 8. coat the outer integument of a seed
- 10. a division of vascular land plants containing a single extant class, pinopsida. they are cone-bearing seed plants
- 11. a division of trees comprising the ginkgos
- 12. the central cellular mass of the body of the ovule, containing the embryo sac
- 13. the fertilized, male ovule of a flowering plant, containing an embryo or rudimentary plant
Down
- 1. having the male and female reproductive organs in separate individuals
- 2. a division of plants grouped with the gymnosperms that consists of 70 species
- 3. a natural covering, as a skin, shell, or rind
- 4. palm-like gymnosperms, includes the surviving order cycadales and several extinct orders
- 6. a solid or highly viscous substance of plant or synthetic origin that is typically convertible into polymers
- 9. a modified leaf that bears sporangia