1 / 16

Plant Classification

Plant Classification. Group 1: Seedless, Nonvascular Plants. Live in moist environments Liverworts Hornworts Mosses. Mosses. Nonvascular, seedless Grow low to ground to retain moisture Lack true leaves Leaf-like structures only 1 cell thick Rhizoids anchor into soil

annmaries
Download Presentation

Plant Classification

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. Plant Classification

  2. Group 1: Seedless, Nonvascular Plants • Live in moist environments • Liverworts • Hornworts • Mosses

  3. Mosses • Nonvascular, seedless • Grow low to ground to retain moisture • Lack true leaves • Leaf-like structures only 1 cell thick • Rhizoids anchor into soil • Early inhabitant of new ecosystems (succession)

  4. Group 2: Seedless, Vascular Plants • Vascular system allows nutrient transport to greater heights • Club mosses • Horsetails • Ferns

  5. Ferns • Seedless, vascular plants • Vascular: allows taller growth • Rhizoids: underground stems draw nutrients • Fronds: leaves uncurl • sporangia on underside • Sori: clusters of sporangia

  6. Group 3: Seed producing, Vascular Plants • Gymnosperms • Cycads • Ginko • Conifers • Angiosperms

  7. Group 3: Seed producing, Vascular Plants • 1) Seed plants don’t depend on water to reproduce • Pollen (contains sperm) combines with egg • Egg hardens into a seed • 2) Nourishment and protection • Nourish: Nutrients inside seed for the embryo • Protection: Hard shell • 3) Allow dispersal • Carried by wind, water, animals

  8. Type 1: Gymnosperms Seeds not enclosed in a fruit produced inside cones Cone = reproductive structure Male cones: produce pollen Female cones: produce eggs and seeds Group 3: Seed producing, Vascular Plants

  9. Gymosperm example: Conifers Cone plants Needle-like leaves Common to lumber industry Evergreen, Pine, Redwood, Cedar Group 3: Seed producing, Vascular Plants

  10. Group 3: Seed producing, Vascular Plants • Type 2: Angiosperms (flowering plants) • Flower = reproductive structure • Protects gamete and fertilized eggs • Seeds enclosed in a fruit • Fruit: Plant ovary • Often attract animals to disperse the seeds inside

  11. Fruit Production • In the seed • Embryo • Food supply • Surrounding ovary grows into a fruit • Fruit attracts animals to eat and spread the seeds Fruit seeds in fox droppings

  12. Angiosperm types(flowering plants) • 2 groups: Monocots and Dicots (based on seed type) • Cotyledon: embryonic leaf • Monocots: embryo with 1 seed leaf • Dicots: embryo with 2 seed leaves

  13. Monocots vs. Dicots

  14. Angiosperm Life Spans • Three Life Span Types: • Annuals • 1 year: Mature…produce seeds…die • Biennials • 1st year: produces short stem, low growth leaves, food reserves • 2nd year: taller stem, leaves, flowers, seeds • Perennials • Live for more than 2 years

  15. Flowers • Reproductive structure of flowering plants • Sepals • outer ring of leaves • protection • Petals • Inner ring of leaves • Brightly colored to attract pollinators • Open petals & sepals reveal male and female structures

  16. Flowers • Female Carpel • Inner most part • Ovary: within the base (female gametophyte) • Style: long stalk • Stigma: sticky tip, collects pollen • Male Stamen • Surrounds carpel • Filaments: long stalks • Anther: produces pollen (male gametophyte)

More Related