Across
- 1. A seed is an embryonic plant enclosed in a protective outer covering.
- 4. the central part of an ovule, containing the embryo sac.
- 6. The Pinophyta, also known as Coniferophyta or Coniferae, or commonly as conifers, are a division of vascular land plants containing a single extant class, Pinopsida.
- 9. a plant that has seeds unprotected by an ovary or fruit. Gymnosperms include the conifers, cycads, and ginkgo.
- 11. Ginkgo is a genus of highly unusual non-flowering plants.
- 12. Cycads are seed plants with a long fossil history that were formerly more abundant and more diverse than they are today.
- 13. coat- the protective outer coat of a seed.
Down
- 2. having the male and female reproductive organs in separate individuals.
- 3. a sticky flammable organic substance, insoluble in water, exuded by some trees and other plants.
- 5. The integumentary system comprises the skin and its appendages acting to protect the body from various kinds of damage, such as loss of water or damages from outside.
- 7. grain- each of the microscopic particles, typically single cells, of which pollen is composed.
- 8. is a division of plants, grouped within the gymnosperms.
- 10. is a leaf that bears sporangia.