50 Questions | Total Attempts: 137

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A fill in the blank quiz over angiosperms.

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Questions and Answers
  • 1. 
    Having the anthers and carpels produced in separate flowers on the same individual.
  • 2. 
    A cavity within a sporangium or a cavity of the ovary in which ovules occur.
  • 3. 
    A flower cluster, with a definite arrangement of flowers.
  • 4. 
    The stalk of the ovule.
  • 5. 
    The stalk of a stamen.
  • 6. 
    The outer wall layer of a spore or pollen grain.
  • 7. 
    A pattern of floral organization in which the sepals, petals, and stamens apparently grow from the top of the ovary.
  • 8. 
    A tissue, containing stored food, that develops from the union of a male nucleus and the polar nuclei of the central cell; it is digested by the growing sporophyte either before or after the maturation of the seed; found only in angiosperms.
  • 9. 
    The female gametophyte of angiosperms, generally an eight-nucleate, seven-celled structure; the seven cells are the egg cell, two synergids and three antipodals, and the central cell.
  • 10. 
    The egg cell and synergids located at the micropylar end of the female gametophyte, or embryo sac, of angiosperms.
  • 11. 
    The fusion of the egg and sperm and the simultaneous fusion of the second male gamete with the polar nuclei; a unique characteristic of all angiosperms.
  • 12. 
    The opening of an anther, fruit, or other structure, which permits the escape of reproductive bodies contained within.
  • 13. 
    The petals collectively.
  • 14. 
    The region of an ovule or seed where the funiculus unites with the integuments and the nucellus.
  • 15. 
    Relatively large vacuolate cells in a subsurface position in apical meristems of shoots.
  • 16. 
    Pertaining to a flower with one or more carpels but no functional stamens; also called a pistillate.
  • 17. 
    One of the members of the gynoecium, or inner floral whorl; encloses one or more ovules.
  • 18. 
    The sepals collectively; the outermost flower whorl.
  • 19. 
    Three cells of the mature embryo sac, located at the end opposite the micropyle.
  • 20. 
    The pollen-bearing portion of a stamen.
  • 21. 
    The floral whorl that comprises the stamens.
  • 22. 
    In angiosperms, the fusion of the second male gamete, or sperm, with the polar nuclei, resulting in the formation of a primary endosperm nucleus, which is triploid in most groups.
  • 23. 
    Nutritive tissue in the sporangium, particularly an anther.
  • 24. 
    A slender column of tissue that arises from the top of the ovary and through which the pollen tube grows.
  • 25. 
    The region of a carpel that serves as a receptive surface for pollen grains and on which they germinate.