1. Flower Structures and Functions

2. Flower Structure/Function
Produces pollen, male sex organ
Holds up anther
Male gametophyte (sex cells)
Sticky top of style where pollen lands. The style transports pollen to the ovary
Produces ovules, female sex organ
Female Gametophyte (sex cell)
Male reproductive parts
Female reproductive parts
Structure
Anther
Filament
Pollen
Stigma & Style
Ovary
Ovule 7.
Stamen 8.
Pistil/ carpel

3. Flower Parts
Female Reproductive
parts
stigma
style
ovary
ovule
Carpel/
pistil
anther
filament
stamen
petal
sepal
receptacle
Male Reproductive
parts
Flat surface projects from flower sometimes to allow place for insects while pollinating
Female reproductive structure: carpel/pistil includes stigma, style, & ovary
Female gametophyte (gamete) is the ovule like female egg
Male reproductive structure: stamen includes anther and filament
Male gametophyte (gamete) is the pollen like male sperm

4. Reproduction Plants can reproduce by….
Self-pollinate (not all of them) or
Cross pollinate- pollen travels from one flower to another (causes variation)

5. Pollination 1. Transfer of pollen from the anther to the stigma

6. 2. Pollen tube grows into style down to ovary
stigma
style
carpel
ovary
ovule

7. 3. Fertilization occurs when male gamete (pollen) is transferred to female gamete (ovule) to make a seed Ex. Sperm and egg (human gametes) make a zygote (baby) Pollen and ovule (plant gametes) make a seed (baby)

8. Adaptation to Environment
Development of fruit for seed dispersal
Seeds dispersed by wind, water, animal, or self-dispersal
Flowers can attract pollinators through bright colors, aromas, and shapes

9. Flower Structure Quiz carpel sepal stamen peduncle
What is the name of the structure labelled X in the diagram?
carpel
sepal X
stamen
peduncle

10. Flower Structure Quiz
Where is pollen made?
stigma
sepal
anther
ovary

11. Flower Structure Quiz petals style nectary ovary
Where is the ovule found in a flower?
petals
style
nectary
ovary

12. Flower Structure Quiz X = style, Y = stigma X = filament, Y = anther
Which parts of the flower are labelled below:
X = style, Y = stigma X
X = filament, Y = anther Y
X = stigma, Y = style
X = anther, Y = filament

13. Pollination Quiz Pollination is the transfer from….?
the stigma to anther
style to stamen
ovule to filament
anther to stigma

14. Pollination Quiz Cross-pollination… Increases variation
Decreases variation
Is only performed by insects
Is only performed by wind

15. What is the method of dispersal? Animal, Water, Wind

16. What is the method of dispersal? Animal, Water, Wind

17. What is the method of dispersal? Animal, Water, Wind

18. What is the method of dispersal? Animal, Water, Wind

19. What is the method of dispersal? Animal, Water, Wind

20. What is the method of dispersal? Animal, Water, Wind

21. What is the method of dispersal? Animal, Water, Wind

22. What is the method of dispersal? Animal, Water, Wind

23. What is the method of dispersal? Animal, Water, Wind

24. What is this layer called?