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The Relationship of Dormancy to Germination

The Relationship of Dormancy to Germination. Essential Question:. How does dormancy affect the growth of a plant ?. LET US DEFINE THE TERMS . . . Germination. Dormancy. Page 707 ; Figure 24-11. Essential Question:. How does dormancy affect the growth of a plant ?. Summary. POLLINATION.

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The Relationship of Dormancy to Germination

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  1. The Relationship of Dormancy to Germination

  2. Essential Question: How does dormancy affect the growth of a plant ?

  3. LET US DEFINE THE TERMS . . . Germination Dormancy

  4. Page 707 ; Figure 24-11

  5. Essential Question: How does dormancy affect the growth of a plant ?

  6. Summary

  7. POLLINATION

  8. Guide Question: Compare the process of pollination of Gymnosperm and Angiosperm.

  9. POLLINATION: Transfer of pollen from male reproductive structure to the female reproductive structure.

  10. In seed plants, the entire male gametophyte is contained in a tiny structure. POLLEN GRAIN:

  11. Pollen tubes: The grain splits opens and begins to grow a structure.

  12. In gymnosperms, the direct transfer of pollen to the female cone allows fertilization to take place without the need for gametes to swim through standing water.

  13. THANK YOU!!! HOME

  14. Fertilization is the fusion of gametes to produce a new organism. fecundation or impregnation of animals or plants.

  15. Kinds of fertilization in plants: Double Fertilization The process of pollination being accomplished, the pollen tube grows through the stigma and style toward the ovules in the ovary. The germ cell in the pollen grain divides and releases two sperm cells which move down the pollen tube. Once the tip of the tube reaches the micropyle end of the embryo sac, the tube grows through into the embryo sac through one of the synergids which flank the egg. One sperm cell fuses with the egg, producing the zygote which will later develope into the next-generation sporophyte. The second sperm fuses with the two polar bodies located in the center of the sac, producing the nutritive triploid endosperm tissue that will provide energy for the embryo's growth and development.

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