Flower Structures and Functions

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

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

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

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

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

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)

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

What is this layer called?