![Page 1: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/1.jpg)
3-2 Notes – Plant Reproduction
3-2 Notes – Plant Reproduction
Chapter 3Lesson 2
Chapter 3Lesson 2
![Page 2: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/2.jpg)
Alternation of Generation
• “Alternation of generations” describes the life cycle of organisms, such as plants, that alternate between diploid stages and haploid stages.
![Page 3: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/3.jpg)
![Page 4: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/4.jpg)
Alternation of Generation
• In seedless plants, the haploid generation lives on its own.
• In seed plants, the haploid generation lives inside diploid tissue.
![Page 5: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/5.jpg)
Seedless Plant Reproduction• Examples: mosses and ferns• They grow from haploid spores, not
seeds• Spores grow by mitosis and cell
division to form haploid plants.
![Page 6: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/6.jpg)
Seedless Plant Reproduction• Fertilization results in a diploid
zygote that grows by mitosis and cell division into the tiny diploid generation.
![Page 7: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/7.jpg)
![Page 8: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/8.jpg)
Seed Plant Reproduction• Most plants are seed plants.
![Page 9: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/9.jpg)
Seed Plant Reproduction• Sperm cells form inside a
protective structure called a pollen grain.
![Page 10: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/10.jpg)
Seed Plant Reproduction• Egg cells form inside a female
reproductive structure called an ovary.
![Page 11: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/11.jpg)
Seed Plant Reproduction• In pollination, pollen grains from
the male structure reach the female structure.
![Page 12: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/12.jpg)
Seed Plant Reproduction• When sperm enters the ovule,
fertilization occurs, and a seed develops.
![Page 13: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/13.jpg)
Seed Plant Reproduction
![Page 14: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/14.jpg)
Seed Plant Reproduction• A seed consists of: an embryo, food supply, protective covering
![Page 15: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/15.jpg)
Seed Plant Reproduction
![Page 16: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/16.jpg)
Seed Plant Reproduction
![Page 17: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/17.jpg)
Gymnosperms (Flowerless Seed Plants)
• Gymno- means naked, so these seeds don’t have a fruit covering.
![Page 18: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/18.jpg)
Gymnosperms (Flowerless Seed Plants)
• Male cones produce pollen grains, and female cones produce eggs.
• Seeds form as part of the female cone.
Female
Male
![Page 19: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/19.jpg)
Angiosperms (Flowering Seed Plants)
• Angio- means vessel, so these seeds do have a fruit covering.
![Page 20: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/20.jpg)
Angiosperms (Flowering Seed Plants)
• The flower’s male reproductive organ is the stamen.
• The flower’s female reproductive organ is the pistil.
![Page 21: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/21.jpg)
Angiosperms (Flowering Seed Plants)
• Pollen grains form in the anther at the stamen’s tip.
• The filament is a long stalk that connects the anther to the base of the flower.
![Page 22: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/22.jpg)
Angiosperms (Flowering Seed Plants)
• The pollen grains land on the pistil’s stigma, which is at the top of a long tube called the style.
![Page 23: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/23.jpg)
Angiosperms (Flowering Seed Plants)
• A pollen tube grows from the pollen grain into the stigma, down the style, to the ovary, where fertilization occurs.
![Page 24: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/24.jpg)
Angiosperms (Flowering Seed Plants)
• Each ovule and its embryo will become a seed.
• The fruit of the plant protects the seed and helps with seed dispersal.
![Page 25: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/25.jpg)
Angiosperms (Flowering Seed Plants)
![Page 26: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/26.jpg)
![Page 27: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/27.jpg)
In alternation of generations, the haploid structures of the diploid generation produces daughter cells called what?
A zygotes
B spores
C pollen
D seeds
3.2 Plant Reproduction
1. A
2. B
3. C
4. D
![Page 28: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/28.jpg)
What is an immature diploid plant that develops from the zygote of a seed plant called?
A embryo
B seed
C fruit
D stigma
3.2 Plant Reproduction
1. A
2. B
3. C
4. D
![Page 29: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/29.jpg)
What is another name for a flowering seed plant?
A zygote
B conifer
C gymnosperm
D angiosperm
3.2 Plant Reproduction
1. A
2. B
3. C
4. D
![Page 30: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/30.jpg)
Where are pollen grains formed?
A anther
B ovule
C testes
D pollen tube
1. A
2. B
3. C
4. D
![Page 31: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/31.jpg)
What flower structure becomes fruit surrounding the seed?
A stamen
B pollen tube
C ovary
D pistil
SCI 2.a
1. A
2. B
3. C
4. D
![Page 32: 3-2 Notes – Plant Reproduction Chapter 3 Lesson 2 Chapter 3 Lesson 2](https://reader036.vdocument.in/reader036/viewer/2022062320/56649cad5503460f9496f0bd/html5/thumbnails/32.jpg)
What type of seed plant does not produce flowers?
A seedless plants
B gymnosperms
C angiosperms
D strawberry plants
SCI 2.a
1. A
2. B
3. C
4. D