4th Grade Ch. 2 Lesson 3 How do Plants Reproduce?

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