1 / 18

Plant Notes Day 1

Plant Notes Day 1. Describe Plant Adaptations to Life on Land. Plants are multicellular eukaryotic autotrophs. Adaptations. 1. Cuticle-protective outer covering.

nessa
Download Presentation

Plant Notes Day 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. Plant NotesDay 1

  2. Describe Plant Adaptations to Life on Land Plants are multicellular eukaryotic autotrophs Adaptations 1. Cuticle-protective outer covering

  3. 2. stomata- openings in leaves to prevent water loss a. Day- open, release water & oxygen and take in carbon dioxide b. Night- close to prevent water loss

  4. 3. Cellulose- strengthening substance in stems

  5. 4. Spores, seeds, fruits- reproductive structures 5. Leaves- photosynthetic organs 6. Roots- organs to help anchor and absorb water

  6. Compare Vascular & Nonvascular Plants • 2. Vascular • Plants which contain vessels for transport • xylem- vessels transporting water & minerals up to leaves • Phloem- vessel transporting sugar down to roots • Example-flowers, trees • Nonvascular • Plants without vessels for water & mineral transport • Example-mosses

  7. Describe Mosses • Nonvascular plants • Small, soft plants which grow in clumps • Absorbs water like a sponge • Live in moist, shaded areas • Height between 1-2 cm • Pioneer plants: break down rock

  8. Mosses and Ferns, Life Cycles

  9. MOSS 7. Reproduction a. alternate generations: have 2 body forms in life cycle b. Gametophyte- body form which produces gametes c. Sporophyte- form which produces spores, grows from gametophyte capsule sporophyte stalk Stemlikestructure gametophyte Leaflike structure

  10. 8. Steps in reproductive cycle • Spore germinate & form gametophyte generation • Antheridium- forms male gametes(sperm) • Archegonium- forms female gametes(egg) • Sperm fertilizes egg & zygote is formed • Zygote divides and forms sporophyte

  11. Protonema(young gametophyte)(N) Spores(N) Malegametophyte Femalegametophyte Maturesporophyte(2N) Capsule(sporangium) Antheridia Sperm(N) Archegonia Gametophyte(N) Youngsporophyte(2N) Zygote(2N) Sperm(N) Gametophyte(N) Egg(N) Figure 22–11  The Life Cycle of a Moss Section 22-2 Haploid (N) Diploid (2N) MEIOSIS FERTILIZATION Go to Section:

  12. Describe seedless plants • Vascular plants- have xylem & phloem • Live in moist, fertile shaded areas • Form fronds instead of leaves • Produce spores instead of seeds Fiddlehead-young fern frond

  13. 5. Reproduction a. alternate generations b. sporophtye & gametophyte are independent of each other c. spores released, germinate to form heart- shaped gametophyte called Prothallus d. prothallus produces both antheridium & archegonium e. sperm released & swims through water to egg where it is fertilized f. zygote is formed and develops in sporophyte

  14. Figure 22–17  The Life Cycle of a Fern Section 22-3 MEIOSIS Sporangium(2N) Haploid gametophyte (N) Diploid sporophyte (2N) Frond Younggametophyte(N) Spores(N) Maturesporophyte(2N) Developingsporophyte(2N) Maturegametophyte(N) Antheridium Sperm Gametophyte(N) Egg Sporophyteembryo(2N) Archegonium FERTILIZATION Go to Section:

  15. Quiz #1Moss & Ferns

  16. 1. Plants are ____________, ___________ autotrophs A. multicellular, prokaryotes C. unicellular, prokaryotes B. multicellular, eukaryotes D. unicellular, eukaryotes2. Identify this part of the plant A. stomata C. cuticle B. cellulose D. phloem 3. Gametophytes produce __________________. A. spores B. anteridium C. archegonium D. gametes The opening

  17. 4. Name this part of the moss life cycle • Protonema • Antheridia • sporophyte • sperm • 5. A fern leaf is called a ____. • Leaflet • Frond • Green leaf • leaf

More Related