1. Plants continued

2. And another word from Hank https://www.youtube.com/watch?v=h9oDTM XM7M8&list=PL3EED4C1D684D3ADF&index= 37 https://www.youtube.com/watch?v=h9oDTM XM7M8&list=PL3EED4C1D684D3ADF&index= 37

3. Tracheophytes (Vascular Plants) Vascular plants evolved from nonvascular plants and contain xylem and phloem cells that allow materials to be transported within plants. In addition, they contain roots, stems and leaves. Vascular plants are divided into two categories: plants that produce spores and plants that produce seeds.

4. Spore producing plants include ferns and club mosses. They typically grow in moist areas and generally do not grow very tall.

5. Similar to bryophytes, these vascular plants require water to help reproduce. Their reproductive cycle also alternates between haploid and diploid generations. Seed producing plants can either produce cones (gymnosperms) or flowers (angiosperms). Seed producing plants are the most advanced and successful plants. They have developed specialized tissues - stems, leaves, roots that have enabled them to reign supreme. In addition, humans are dependent on these plants for food, clothing, housing, fuel and medicine.

6. Reproduction If you suffer from pollen allergies in the spring you will soon find out why. Pollen is the male sex cell released from flowering plants. It is dispersed by wind, insects and birds. Since these plants reproduce sexually, the pollen needs to arrive at the female sex organ to produce a seed.

7. If the seed is able to germinate it will develop into a new plant. The image on the right shows the yellow pollen leaving the angiosperm. If they reach their destination, more beautiful flowers will be produced.

8. Gymnosperms produce cones that are either male cones or female cones. Male cones are small and generally found in clusters. The male cones produce and release haploid pollen cells that resemble yellow dust. Female cones are also small but are very sticky. This allows the pollen to adhere to the cone so that fertilization can occur.

10. https://www.youtube.com/watch?v=ExaQ8sh hkw8&list=PL3EED4C1D684D3ADF&index=38 https://www.youtube.com/watch?v=ExaQ8sh hkw8&list=PL3EED4C1D684D3ADF&index=38

11. Global Warming and Plants Imagine the global impact plants have on communities all over the world from food production to housing developments. Now imagine a shift, a change in the types of plants, trees, vegetation that are currently supported by our climate. How would an increase in temperature affect the growth and development of certain crops? Would yearly increases in rainfall destroy potato crops in Eastern Canada? The effects of global warming and climate change may be devastating to the thousands of species of plants.

12. Homework Read the article “Food and Climate” and submit a summary on the impact climate change has on plants.“Food and Climate” The summary must be in your own words. Email your report to me through the website.