1. Plant Reproduction Why reproduce? Sexual vs. asexual reproduction
Sexual reproduction in plants
Gametophytes and sporophytes
Gymnosperms and angiosperms
Asexual reproduction in plants
Asexual reproduction using fragments
Asexual reproduction using special structures

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3. Plants Must Reproduce Makes more plants Keeps species alive
Plants can reproduce ____________

4. Sexual vs. Asexual Reproduction in Plants
Usually needs pollinators (e.g. bees, birds, butterflies).
Flowers attract insects, birds, and other animals.
______________
Asexual
____________
Cells do not join.
Creates new plants identical to parent plant.

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6. Gametophyte Sporophyte __________________ Gametes join to form zygote
Zygote develops in sporophyte
Sporocytes (fertile cells) make spores
_____________

7. Sexual Reproduction in Plants
Spore plants
Includes seed …………….
Seed plants
__________________________________________________________
Cryptogams
Spores fall off plant after making gametophyte
_________________________

8. Seed Plants Two groups: Two types of spores Gymnosperms Angiosperms
Megaspores: large spores; _________________________ _________________
Microspores: ……………

9. Gymnosperms and Angiosperms
Produce seeds
__________________________
Ovule becomes seed
One female gametophyte produced in each ovule
Pollen grains develop tube to pass sperm to egg

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11. Gymnosperms Pines Sporophyte may become large tree
_________________________________________
Ovule makes pollination droplet
Pollen sticks to pollination droplet
……………..

12. Angiosperms ____________________
Seeds develop inside structure called pistil
Pollen attaches to surface of megaspore
________________________________________
………………….

13. Angiosperms _____________________ Petal Style Ovary (base of pistil)
Sepal
Leaf
Stem
Root
Pollen grains
Microsporangium
Filament
________________
___________
Egg

14. Angiosperms Stamen Anther: _________________ Filament: blade stalk
Pistil
Ovary: _____________________________
Style: column-shaped stalk sticking out of ovary
Stigma: _______________

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17. Angiosperms
Pollen goes down pollen tube, through opening, and into gametophyte
One sperm fertilizes egg
……………………..
___________________________
Endosperm
___________________________________________
Seed: _________________________
Seeds form hard seed coats
________________________

18. Angiosperms

19. Asexual Reproduction in Plants
Two basic types
_______________________________
_______________________________________

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22. Spores Buds Ferns, liverworts, mosses Ferns, liverworts, mosses
___________

23. Asexual Reproduction Using Special Structures
Special cells/organs act as reproductive organs
No union ………….
In flowering plants, organs include:
Rhizomes
Tubers
Stolons
Corms
Bulbs

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26. Bulbs
Small bit of stem tissue surrounded by food-storage leaf bases, called scales
Grow into new plants
_______________________
Onions form bulbs