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The world would look awful in a  future withy no agricultural, economic, social, and political practices. There would be no crops. There would be no structure. That could lead to either an overtaking of the government or people would die off or live as the people in the old age did.

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I believe the most influential chemical used in the world that is derived from a plant is Morphine. Morphine is commonly used in hospitals when someone is seriously injured. Morphine is the most important opioid. It is commonly used as an analgesic, and it works by attaching itself to 3 specific receptors in the brain (m, k, d).

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I chose a tractor because new farm techniques and equipment was introduced during the third agricultural revolution. Pesticides and fertilizers were also introduced during this time period. These things made farming more efficient and productive.

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The First Agricultural Revolution had a great impact on human population. The plow was invented which caused an increase in agriculture. The increase in agriculture caused a surplus of food and farming. Finally, the surplus of food increased the division of labor.

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I believe that the Tundra is in the most danger of geological change. Global warming has caused an increase in temperature which puts the tundra at risk. Many animals are migrating, or having to adapt to the increased temperature due to global warming.

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Bryophytes and Pteridophytes are known as seedless plants. Mosses and Ferns are just a couple of examples of seedless plants found in Georgia. Gymnosperms and Angiosperms can be classified as seed plants. Naked seed plants and flowering plants are examples of seed plants found in Georgia.

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The Kingdom Plantae evolved from an ancestor related to the green algae. Examine the cladogram below that shows the currently accepted phylogeny for different groups of plants.

Click through the following interactive, reading carefully and thinking about the challenges and adaptations required for plants to move from a strict aquatic environment (green algae) to a land-dwelling plant. Record your observations in the Plant Evolution Notes Guide found in the sidebar.

Plant Life Cycles: Alternation of Generations

All plants display a life cycle that is commonly called an "alternation of generations." Life cycles show the path of growth and sexual reproduction in an organism's lifetime. The generations that alternate are the sporophyte (or diploid, 2N) stage and the gametophyte (or haploid, 1N) stage.

Click through the following interactive to learn more about life cycles. Focus on the life cycles of plants. Answer the questions that follow:

Answer the following questions addressed in the Lifecycles of Animals and Plants Interactive above to test your learning. Roll your mouse over each to check your answers.

1. What are some ways that plants reproduce asexually?

2. Life cycles explain which type of reproduction in plants - asexual or sexual?

3. What is the name of the plant life cycle?

4. What are the two stages of this life cycle?

5. The gametophyte produces _________ and the sporophyte produces ________.

6. What event is described as a sperm and egg uniting?

7. Is a zygote diploid or haploid?

8. Is a gametophyte plant haploid or diploid?

9. Is a sporophyte plant haploid or diploid?

Plant Classification

The Kingdom Plantae is subdivided into four major groups. The groups are divided up based upon the presence of vascular tissue ( tracheophytes), seeds and flowers, among other characteristics:

1. Bryophytes (Mosses, Hornworts, Liverworts)

2. Pteridophytes (Ferns and Fern Allies)

3. Gymnosperms (Naked Seed Plants)

4. Angiosperms (Flowering Plants)

Study the information below for each of the plant groups.

Seedless Plants: Bryophytes and Pteridophytes

The life cycles featured in the slideshow above are found in the Plant Life Cycles Handout in the sidebar. Re-watch and make notes as necessary.

Seed Plants: Gymnosperms and Angiosperms

The life cycles featured in the slideshow above are found in the Plant Life Cycles Handout in the sidebar. Re-watch and make notes as necessary.

Lets Practice!

Navigate to the sidebar and locate the Plant Graphic Organizer. Complete this document to summarize and review the major similarities and differences among all four plant groups. It will be helpful in studying for the upcoming quiz and test. How well do you know your Plant Evolution and Classification? Test yourself by reviewing with the interactive below. Click the globe to begin:

Plant Classification and Evolution Quiz

It is now time to complete the Plant Classification and Evolution Quiz. You will have a limited amount of time; please plan accordingly.

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The Kingdom Plantae evolved from an ancestor related to the green algae. Examine the cladogram below that shows the currently accepted phylogeny for different groups of plants. Click through the following interactive, reading carefully and thinking about the challenges and adaptations required for plants to move from a strict aquatic environment (green algae) to a land-dwelling plant.

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This video best describes photosynthesis because it shows the steps that occur during the process. It shows that plants use sunlight to synthesize foods from carbon dioxide and water. It also shows the chemical reaction that occurs between carbon dioxide (CO2) and Water (H2O) which shows that the atoms rearrange to form sugar (C6H12O6)

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I chose this picture because I feel like trees represent a strong role in society, and in the environment. A trees role in the environment is to produce oxygen. Trees do this by absorbing carbon dioxide through the leaves, and then extracting the carbon to contribute to growth. The tree then releases the oxygen through its leaves, so we as a human race can breathe. A trees role in society can be explained in multiple ways. The best way I can describe it is that we use trees to produce paper.