1. Plants can reproduce either asexually or sexually
Plant Reproduction
Plants can reproduce either asexually or sexually

2. Asexual Reproduction
Occurs when one part of a plant develops into a separate new plant identical to the parent
Adavantages: only takes one parent

3. Sexual Reproduction Requires two parents organisms
Combines plant sperm & egg
It’s a combination of both plants genetics

4. Alternations of Generations
Plants have 2 life stages called generations
The life cycle of an organisms alternates between diploid and haploid generations

5. Diploid
When you look at a tree or a flower you’re seeing the diploid generation
The diploid generation begins with fertilization

6. Haploid
The haploid generation is tiny and lives surrounded by special tissues of the diploid plant
There are haploid structures called spores

7. Seedless plants Ferns and mosses grow form haploid spores
Not all plants grow from seeds

8. Seed Plants Most land plants from seeds
In seed plants, pollination occurs when pollen grains land on the female reproductive structure of a plant of the same species

9. Pistil ( stigma, style, ovary, ovule)
Female
Pistil ( stigma, style, ovary, ovule)
Male
Stamen ( anther, filament)

10. How pollen moves

11. Watch Pollinators Insects like bees and ants birds Mice
Other small animals
Watch

12. watch Pollination Pollination occurs after pollen lands on the stigma
A pollen tube grows down the style to the ovary
The pollen fertilizes the ovule
A zygote develops into an embryo which becomes a seed
watch

13. Angiosperms vs. Gymnosperms
A flowering seed plant
Flowerless seed plant
Animals eat fruits and vegetables that come from angiosperms
Not surrounded by fruit
Alternation of generations

14. Lets explore angiosperms
Watch