1. Do Now Questions 1.What is a Bryophyte? 2.Where can you find Bryophytes? 3.Give one example of a Bryophyte? 4.What are the two categories that vascular plants are split into? 5.Which of the following lists the classification order from most general to most specific? a)Domain, Kingdom, Phylum, Class, Order, Family, Genus Species b)Species, Genus, Family, Order, Class, Phylum, Kingdom, Domain

2. Homework and Announcements Homework due Friday: –Print GIZMO Cell Energy Cycle –Read/Notes 23.1 Due today: –Notebook Check –Draw and Label Plant Diagrams –Workbook page 17 # 1-4, 253-255 skip # 4-6 –Read/Notes ch 2.1, 2.2, 22.1, and 22.2

3. Title: Plant Structure L.O. SWBAT Identify plant structures such as guard cells, xylem, phloem, etc.

4. Bozeman Science

5. 22.3 Seed Plants Each and every seed contains a living plant ready to sprout as soon as it encounters the proper conditions for growth A seed is a plant embryo and a food supply, encased in a protective covering

6. 22.3 The Importance of Seeds Unlike mosses and ferns, the gametes of seed plants do not need standing water for fertilization Adaptations that allow seed plants to reproduce without standing water include: –a reproductive process that takes place in cones or flowers –the transfer of sperm by pollination –the protection of embryos in seeds

7. 22.3 Seed Plants Gymnosperms Bear seeds directly on scales of cones Male gametophyte is in pollen grain Pollen is carried by wind Angiosperms Flowering plants Bear their seeds in flowers inside a layer of tissue to protect the seed Male gametophyte also in pollen grain Pollen is carried by animals

8. 22.3 Seed Plants Embryos can remain in dry conditions for weeks or even years because of the tough seed coat that surrounds and protects it

9. Brain Pop Review – Seedless Plants Quick Write – Name 3 characteristics of Seedless Plants.

10. Brain Pop – Seed Plants Quick Write –Name three characteristics of seed producing plants.

11. Flowering Plants Angiosperms (flowering plants) are the most recent in evolution of plants –Contain ovaries, which surround and protect seeds –Attract animals such as bees to carry pollen to other flowers

12. Flowers & Fruits Fruit contains one or more ovaries with seeds inside the walls –Helps to disperse the seeds, especially when eaten by an animal –Increase the range the plants inhabit (over hundreds of km)

13. Angiosperm Classification Classified according to the number of seed leaves (cotyledons) in their embryos –One seed leaf – monocots –Two seed leaves – dicots –** Recent classification has shown dicots go into a variety of different categories, and have been expanded –**Figure 22-22 is a good reference!

14. 23.1 Specialized Tissues in Plants Plants move materials, grow, repair themselves, and constantly respond to the environment. They do this with 3 principal organs that produce, store, and transport nutrients: –Roots –Stems –Leaves

15. 23.1 Seed Plant Structure Roots: –Anchor plants –Absorb water and dissolved nutrients –Transport these materials to the rest of the plant –Store food –Hold the plant upright

16. 23.1 Seed Plant Structure Stems: –Support the plant body –Transport nutrients –Serve as a defensive system that protects the plant against predators and disease

17. 23.1 Seed Plant Structure Leaves: –Main photosynthetic organ (absorbs sunlight and creates food) –Protect against water loss

18. 23.1 Plant Tissue Systems 3 main tissue systems: –Dermal: covers the plant like skin –Vascular: forms a system of pipe-like cells –Ground: produces and stores food

19. 23.1 Plant Tissue Systems Dermal Tissue: made of a single layer of cells called epidermis –Covered with a thick waxy layer (cuticle) which protects against water loss –The protective outer covering of a plant

20. 23.1 Plant Tissue Systems Vascular Tissue: supports the plant body and transports water and nutrients throughout the plant. Made up of 2 types of tissue: –Xylem: transports water (also known as tracheids) –Phloem: transports dissolved nutrients (also known as sieve tube elements)

21. 23.1 Plant Tissue Systems Ground Tissue: produces and stores sugars, and contributes to physical support of the plant –Edible portions of the plants –Composed of parenchyma cells and contain many chloroplasts for photosynthesis

22. Study Workbook A Pg. 268 #9-13 Pg. 284 ALL Pg. 288-289 #17-27 –YES, you must draw the flower and label the parts!

23. Grading – Notebook Check Draw Fig 22-6 on page 638 –Evolution trend: the reduction in size of the gametophyte and the increasing size of the sporophyte. Draw Fig 22-10 on page 641 –Draw and Label –In Bryophytes, the gametophyte is the dominant, more familiar stage of the life cycle and carries out photosynthesis. Sporophyte phase is reproductive. Draw Fig 22-13 on page 644 (645 mature sporophyte) –Draw and Label Frond and fiddlehead. –Vascular plant ex. Ferns. Easy to recognize because of delicate leaves and fiddlehead. Workbook Pgs. 17 #1-4 and Pgs. 253-255 SKIP #4-6 Notes 2.1, 2.2, 22.1, 22.2 – must include section summaries