Flower Structure & Plant

Development

Daily Objectives

Students will be able to identify/label the structure of a flower

Students will be able to describe the function of each structure

Students will be able to list the stages of development

Parts of a Flower Pedicel (stem) Sepal Ovule Ovary Style Stigma Filament Anther Petal

Pistil

Stamen

Sepals*

Modified leaves that make up the outermost ring of flower parts and protect the bud

Often green like other leaves

Cover and protect the flower while it is a bud

As the blossom opens, the sepals fold back.

Sepal Video

Petals*

Broad, flat, thin leaflike parts of a flower

Vary greatly in color and shape

Attract insects or other animals to the flower

These animals/insects help plants reproduce by carrying pollen from flower to flower

Stamen

Consists of two flower structures

Each stamen has a thin stalk called a filament.

The filament is topped by an anther.

Anthers are saclike structures that produce pollen.

A stamen is a male reproductive structure of flowers

Pistil Consists of three flower

structures Found in the center of most

flowers Tip of the pistil is called the

stigma Pollen grains collect on stigmas,

which are often sticky or feathery

Long, slender part of the pistil in the style

Rounded base of a pistil that contains one or more ovules in call the ovary

Female reproduce structure of flowers

Ovule*

Each ovule contains an egg

When the egg is fertilized, the ovule develops into a seed

The ovary develops into a fruit

Complete Diagram

Virtual Investigations: Plant Processes

As a class, we will complete Lab 2 of the Plant Processes Virtual Investigations

We will determine the stages of plant development

Textbook

Order of Plant Development

GerminationFormation of FlowerPollinationFormation of Pollen TubeFertilizationFormation of FruitFalling of Sepals, Stamens and PetalsSeed Dispersal

Daily Objectives

Students will be able to identify/label the structure of a flower

Students will be able to describe the function of each structure

Students will be able to list the stages of development

It’s Your Turn!!!

Get into groups of 3-4 people and go to a computer

Go to your online textbook and select Chapter 12. Click orange tab, eActivities. Under Virtual Investigations click Introduction to Plants and complete Lab 1 and 2

Work together and ask questions if needed