4th grade ch. 2 lesson 3 how do plants reproduce?
TRANSCRIPT
Ch. 2 Lesson 3How do plants reproduce?
4 main parts
of flowers
petals sepals pistil stamen
petals• colorful
• attract bees, butterflies, etc.
sepals • leaflike parts
that cover & protect flower bud
• found below petals
pistil• female part of flower
• makes egg cells
stamen• male part of flower
• produces pollen-male sex cells
anther• at tips of stamens
• make pollen
pistilstamen
antherpollen
A single ragweed plant can release
more than one million grains of
pollen into the wind.
• movement of pollen from stamen pistil pollination
Pollination
ovary•bottom of pistil where fertilization takes place
fertilization• when sperm & egg cell combine
after fertilization1. petals & stamens dry up & fall off
2. fertilized egg seed
3. ovary becomes fruit
Video of ovary developing
1.2.
3.
4.
How plants reproduce