Life Science CK12 Plant Reproduction and Life Cycle

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Across
  1. 2. vascular seedless plant with large divided leaves called fronds; more plant-like than the clubmosses; have stems, leaves, and roots
  2. 7. the process resulting in the division of the eukaryotic cell nucleus into two identical nuclei before the cell divides; occurs in four phases: prophase, metaphase, anaphase, and telophase
  3. 9. type of life cycle characteristic of plants in which the organism alternates between haploid gametophyte and diploid sporophyte stages
  4. 11. coiled structure made of DNA and protein that is present during cell division and visible with a light microscope
  5. 14. referring to the total number of chromosomes in a species; having two sets of chromosomes
  6. 17. diploid cell that forms when two haploid gametes unite during fertilization
  7. 18. male gamete
  8. 20. reproductive cell produced during meiosis that has the haploid number of chromosomes
Down
  1. 1. diploid generation in the life cycle of a plant that results from sexual reproduction with gametes and that produces spores for asexual reproduction
  2. 3. structure in angiosperms consisting of male and female reproductive structures that attracts animal pollinators
  3. 4. having only one chromosome of each type; gametes are haploid
  4. 5. series of stages a sexually reproducing organism goes through from one generation to the next
  5. 6. reproductive cell produced by fungi or plants
  6. 8. haploid generation in the life cycle of a plant that results from asexual reproduction with spores and that produces gametes for sexual reproduction
  7. 10. multicellular, heterotrophic eukaryote with specialized cells that lack cell walls; member of the animal kingdom
  8. 12. structure produced by a seed plant that contains an embryo and food supply enclosed within a tough coat
  9. 13. type of cell division in which the number of chromosomes is reduced by half and four haploid cells are produced
  10. 15. basic unit of structure and function of living things
  11. 16. female gamete
  12. 19. a tiny nonvascular plant that appears like green "fuzz" with tiny stem-like and leaf-like structures