1. DO NOW
On a blank sheet of paper, create an online dating profile for the flowers you see on Ms. Parton’s desk. What do they like to do? What is their purpose in life? Why would they be a good mate? Why would another flower want to mate with them? Your dating profile should be written in complete sentences, include a picture/drawing, and be creative. Minimum seven sentences. DO NOT TOUCH THE FLOWERS OR REMOVE THEM FROM THE BASKET!

2. Plant Physiology Plant Reproduction
SC.912.L.14.7 Relate the structure of each of the major plant organs and tissues to physiological processes.

3. Daily Overview
Objective: I can describe the structure and function of a flower.
Essential Question: How do plants reproduce?

4. Flowers
Flowers are the reproductive structure of flowering plants. They protect gametes and fertilized eggs.
Many parts make up the flower:
Sepal: modified leaves that protect the developing flower.
Petal: Modified leaves that are bright in color to attract animal pollinators.

5. How can you remember the male vs. female parts?
Flowers
Flower Parts cont’d:
Stamen: Male structure of flower. Includes the anther and the filament.
Anther – Produce pollen grains (sperm)
Filament – supports the anther.
Pistil (or carpel): Female structure of the flower. Includes the stigma, style and ovary.
Stigma- covered with sticky substance to hold pollen grains when they land.
Style- a tube that leads from stigma to ovary.
Ovary- Base of flower where the egg is produced.
How can you remember the male vs. female parts?

7. Flower Pollination & Fertilization
Pollination The transfer of pollen grains from the anther to the stigma of a flower
Pollen grains can be transferred within the same flower
Fertilization – joining of male and female reproductive cells.
When a pollen grain lands on the surface of a stigma, it produces a tube
The inside of the tube contains the male cells of the flower.
The tubes grow down the style to reach the ovules in the ovary.
Inside each ovule is an egg cell.

9. Higher order thinking question #1
How are the functions of the pistil and the stamen related?

10. Fruits A fruit is the mature ovary of a flower.
It surrounds and protects the seed or seeds
Play an important role in seed dispersal.
Blown in the wind – ex. Dandelion
By animals ex. Stuck in animals fur or
deposited after digestion
Movement by water
Can come in many forms

11. From Flower to Fruit
Use this slide to describe the process of flower to fruit

13. Higher order thinking question #2
Why are fruits and seeds important adaptations for plants?

14. Cones
Cones are reproductive structures of plants that do not bear fruit.
Cones contain hard protective scales
Can be Male or Female:
Male cones contain pollen (sperm).
Eggs are produced in female cones.
Seeds also develop on the scales of female cones.

15. Higher order thinking question #3
How can a tree which is rooted in place produce offspring with another tree hundreds of miles away?

16. Aligned Investigations
Flower Dissection
Each student will:
Dissect a flower and sketch it, labeling all the parts.
Observe pollen grains and make a labeled drawing.
Observe a pistil, which has been dissected, and make a labeled drawing of the ovary.

17. Flower Dissection
Step 1: Observe the sepals and petals. Draw a sepal and petal on your lab sheet. Then, answer the two analysis questions about sepals and petals.
Step 2: Carefully remove the sepal. Place to the side. Carefully remove all the petals. Place to the side. Observe the stamen. Observe the pollen – see if you can shake some onto your paper into the box that says pollen. Carefully remove each stamen. Place to the side. Draw the stamen and label each part. Draw pollen if you did not get any on your paper. Then, answer the three analysis questions about stamen and pollen.
Step 3: The only thing left should be a slender stalk (that may be pronged into three fingers). This is the pistil. Observe the pistil. Carefully remove the pistil and place to the side. Draw the pistil and label each part. At this point, call Ms. Parton over to slice your ovary to expose your ovules (eggs). Draw the ovary and the ovules and label each part. Then, answer the analysis questions about the pistil and ovary.
Step 4: Label the flower on the back of your page.

18. Exit ticket
Describe and explain how the structure of the stomata helps to maintain homeostasis in plants?
How have flowers, fruits and cones enabled the survival of plants?