1 / 25

Lesson 1

Lesson 1. Classifying Ornamental Plants. Next Generation Science/Common Core Standards Addressed!.

raina
Download Presentation

Lesson 1

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Lesson 1 Classifying Ornamental Plants

  2. Next Generation Science/Common Core Standards Addressed! • HS‐LS1‐2. Develop and use a model to illustrate the hierarchical organization of interacting systems that provide specific functions within multicellular organisms. [Clarification Statement: Emphasis is • on functions at the organism system level such as nutrient uptake, water delivery, and organism movement in response to neural stimuli. An example of an interacting system could be an artery depending on the proper function of elastic tissue and smooth muscle to regulate and deliver the proper amount of blood within the circulatory system.] [Assessment Boundary: • HS‐LS2‐3. Construct and revise an explanation based on evidence for the cycling of matter and flow of energy in aerobic and anaerobic conditions. [Clarification Statement: Emphasis is on conceptual • understanding of the role of aerobic and anaerobic respiration in different environments.][Assessment Boundary: Assessment does not include the specific chemical processes of either aerobic or anaerobic respiration.]

  3. Bell Work! • . Describe the system used for naming and classifying plants • 2. Identify the major groups of plants • 3. Describe the differences between annuals, biennials and perennials

  4. Terms!

  5. Interest Approach Suppose you were walking through the woods and stumbled upon an unusual plant. What would you call it? Would you know how to classify it? Could you identify its characteristics? These are questions many taxonomists ponder when labeling a new plant.

  6. Interest Approach Cont. • Take a couple of minutes and list as many plants as you possibly can. Let’s classify them as deciduous (loose their leaves) or coniferous (remain as evergreens). • Now list as many animals as you can. Can you classify them as birds, reptiles, amphibians, insects, fish, or mammals? • Why do you know more about animals?

  7. How Are Plants Named and Classified? • Plants are classified by their similarities within their characteristics. • Taxonomists compare flower patterns, stem and leaf structures, life cycles, genetic similarities and many other characteristics. • They are then grouped in specific categories, or taxas:

  8. Categories/Taxas Example* Kingdom Plantae Phylum (Division) Magnoliophyta Class Liliopsida Order Cyperales Family Poaceae Genus Triticum Species aestivum *Sample classification of bread wheat

  9. Botanists call plants by their last two taxas – genus and species • This system is known as binomial nomenclature (two-word naming system) • Developed by Carolus Linnaeus • Uses Latin for three reasons: • Universal (known by all scientists) • Very descriptive • Unchanged (contains no slang words) • Genus is capitalized; Species lower case • Ex. Triticum aestivum

  10. What Are Some Ways That We Can Put Plants Into Groups? • Plants live in a variety of climates and niches • The adaptations that plants have made to survive in different climates allows for them to be classified into one of four major groups: • Bryophytes, ferns, gymnosperms and angiosperms

  11. Bryophytes • Belong to the phylum Bryophyta • Non-vascular plants • No conducting tissues • Live in damp places • Limited in size due to lack of conducting tissue • Ex. Mosses and liverworts Liverwort Moss

  12. Ferns Ferns in the forest • Vascular plants • Reproduce by spores • Have no true leaves; 0nly fronds • Fronds produce food and spores • New fronds called fiddleheads Fiddleheads Spores on underside of frond

  13. Gymnosperms • Reproduce with seeds found in cones • Also known as a conifer • Leaves reduced to scales or needles • Most are evergreen – hold on to their green color year round • Ex. Pines, spruce, cedar • Some can be deciduous- lose their leaves • Ex. Ginkgo, larch Coniferous evergreen – Pinus contorta Deciduous conifer – Ginkgo biloba

  14. Angiosperms • Plants that reproduce by flowers • There are two types: monocotyledons (monocots) & dicotyledons (dicots) • A cotyledon is a food storage structure in the seed. • Monocots have a single cotyledon • Ex. Grasses, corn and lilies • Dicots have two cotyledons • Ex. Roses, petunias and geraniums, beans

  15. Angiosperms - Monocot • Have flower parts (sepals, petals, stamens, pistils) in multiples of three • 3, 6, 9… • Parallel venation within the leaves • Stems with scattered vascular bundles • Narrow leaves • Fibrous root system Orchid – Paphiopedilum curtisii

  16. Angiosperms - Dicot • Flower parts are in multiples of 4’s or 5’s • 4,12,16 or 5, 10, 15 • Netted veins • Vascular bundles are in rings around the stem • Have broad leaves • Taproot system Hibiscus sp.

  17. Monocot vs. Dicot

  18. What Is the Difference Between Annuals, Biennials and Perennials? • Plants are often classified based on their life cycles • Even though gymnosperms and angiosperms reproduce by seed, there are different strategies for passing the seeds on to future generations

  19. Annuals Corn – Zea mays • Plants grow from seed, flower, produce new seeds all in one season • It dies after producing new seeds • Have an herbaceous stem – green & fleshy • Ex. Impatiens, corn, snapdragons

  20. Biennials Foxglove – Digitals purpurea • Plants that live for two years, then flower and die • Food is produced during the first year, flowers the second year • Ex. Foxglove, carrot, queen Anne’s lace

  21. Perennials • Plants that live for three or more years • Flower for a short time • Do not die after flowering • Can be herbaceous or woody – having thick stems made of wood • Ex. Tulips, Kentucky bluegrass, trees and shrubs Bristlecone pine – Pinus longaeva

  22. Back to Annuals Germination----Growth---Flowering----Death Back to Perennials Germination---- Growth---Flowering----Dormancy One or more flowering cycles Back to Biennials Germination---Growth---Dormancy---Growth---Flowering---Death Season 1 Season 2 Courtesy of Interstate Publishing

  23. Summary • What is the difference between an angiosperm and a gymnosperm? • How is a monocot different from a dicot? • Are evergreens herbaceous or woody plants? • How would you classify the grass found outside on the lawn?

  24. Summary Cont. • What makes up the scientific name of a plant? • Why are scientific names written in Latin? • In what group would you find mosses? Describe their habitat. • Describe the life cycle of a perennial. • Name all 7 taxas in the classification system.

  25. The End

More Related