Flower Dissection Activity Review

There are two types of plants……… plants with seeds and plants without seeds.

Plants without Seeds MossesLiverworts Ferns Horsetails

How do plants reproduce without seeds? Plants without seeds reproduce through spores that are released into the air.

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

Plants with Seeds GymnospermsAngiosperms 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.

Flowering Plants A flowering plant has both male and female parts. The male part is called the stamen. The female part is called the pistil.

Stamen: The male reproductive structure of a flowering plant

Anther: the structure located on top of the stamen and carries the pollen

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.

Pollinators A pollinator is something that moves pollen from the male parts to the female parts. Can you name any other pollinators?

Filament: a thread-like part that holds up the anther

**Please write this definition on your worksheet** Pistil: the female reproductive structure of a flowering plant

**Please write this definition on your worksheet** Stigma: the sticky surface on the top of the pistil; it traps and holds the pollen

**Please write this definition on your worksheet** Style: the tube-like structure that holds up the stigma

Ovary: the plant part at the bottom of the flower that has ovules inside (this turns into the fruit and seeds we eat)

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!

Petal: the colorful flower parts that surround the reproductive structures

Sepal: the green petal-like parts at the base of the flower; they help protect the bud when it develops

Perfect: flowers that have both male and female parts (ex. Roses, lilies, and pea plants)

Imperfect: flowers with male or female parts (ex- cucumbers, pumpkins, and melons)

Pollination: when pollen moves from the male parts to the female parts