1 FlowerDissectionActivity 2 There are two types of plants
plants with seeds and
plants without seeds.
3 Plants without Seeds Mosses Liverworts Horsetails Ferns 4 How do plants reproduce without seeds
Plants without seeds reproduce through spores that are released into the air.
5 Life Cycle of Ferns The spores are both male and female so sexual reproduction is taking place. 6 There are two types of reproduction.
Asexual Reproduction Requires one cell through divisions of mitosis.
Sexual Reproduction Requires two haploid cells a male sex cell and a female sex cell each with half the DNA required to make the new organism.
Potato Sprouts Flowering plants with seeds 7 Plants with Seeds Gymnosperms Angiosperms Pine trees or conifers are an example of a plant that reproduces by seeds but without flowers. Poppies are a type of flowering plant that reproduce by seeds made by flowers. 8 Flowering Plants
A flowering plant has both male and female parts.
The female part is called the pistil. The male part is called the stamen. 9 Please write this definition on your worksheet
Stamen The male reproductive structure of a flowering plant
10 Please write this definition on your worksheet
Anther the structure located on top of the stamen and carries the pollen
Pollen is the male sex cell that donates half of the DNA to make a seed.
It is a powdery substance usually orange or yellow in color that gets carried by pollinators. 12 Pollinators
A pollinator is something that moves pollen from the male parts to the female parts.
Can you name any other pollinators 13 Please write this definition on your worksheet
Filament a thread-like part that holds up the anther
14 Please write this definition on your worksheet
Pistil the female reproductive structure of a flowering plant
15 Please write this definition on your worksheet
Stigma the sticky surface on the top of the pistil it traps and holds the pollen
16 Please write this definition on your worksheet
Style the tube-like structure that holds up the stigma
17 Please write this definition on your worksheet
Ovary the plant part at the bottom of the flower that has ovules inside (this turns into the fruit and seeds we eat)
18 Please write this definition on your worksheet
Ovules the female sex cells inside the ovary that donate half the DNA to become the seed
(They become the seeds when pollinated or fertilized by the pollen.)
A baby seed! 19 Please write this definition on your worksheet Petal the colorful flower parts that surround the reproductive structures 20 Please write this definition on your worksheet
Sepal the green petal-like parts at the base of the flower they help protect the bud when it develops
21 Please write this definition on your worksheet
Perfect flowers that have both male and female parts (ex. Roses lilies and pea plants)
22 Please write this definition on your worksheet
Imperfect flowers with male or female parts (ex- cucumbers pumpkins and melons)
23 Please write this definition on your worksheet
Pollination when pollen moves from the male parts to the female parts
Watch a bee pollinate a passion flower at http//www.youtube.com/watchvAYwAOmcNcCk 24 Illustrate the Pollination Process
First draw two flowers and label the parts of the male and female reproductive structures.
2. Then watch the pollination animation at http//smithsonlineclassroom.com/media/pollinatio n.mov and illustrate what you see. 25 Congratulations!
You have just learned about the following California Science Standards in less than an hour
Genetics 2a the differences between sexual and asexual organisms
Genetics 2b offspring inherit half their genes from each parent
Structure and Function of Living Organisms 5f the structures and processes by which flowering plants generate pollen and ovules seeds and fruit.
Created by Ms. Smith
Washington Middle School
La Habra California
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