1 / 21

Kingdom Plantae

Kingdom Plantae. Plant Characteristics. Eukaryotic Multicellular Cell walls made of cellulose Develop from multicellular embryos Carry out photosynthesis Contain chlorophyll a & b Reproduce by alternation of generations. Plant Adaptations to Land. Solutions:

annona
Télécharger la présentation

Kingdom Plantae

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. Kingdom Plantae

  2. Plant Characteristics • Eukaryotic • Multicellular • Cell walls made of cellulose • Develop from multicellular embryos • Carry out photosynthesis • Contain chlorophyll a & b • Reproduce by alternation of generations

  3. Plant Adaptations to Land Solutions: • Roots absorb H2O & minerals • Lignin & cellulose in cell walls • VascularTransport System • Waxy cuticle & stomatawith guard cells • Pollencontaining sperm Problems: • Need minerals • Gravity • Increase in Height for Light • Adaptations for Drier environment • Reproduction

  4. Parts of a Leaf

  5. What do plants need to survive? CO2 O2

  6. Plant Evolution • First plants evolved from organisms similar to today’s multicellular green algae.(from kingdom protista)

  7. Bryophytes • Life cycle that depends on water so the sperm can swim to the egg. • Lack vascular tissue, so they obtain water through osmosis (this limits their height) • Includes mosses, liverworts, & hornworts

  8. Tracheophytes: seedless vascular plants • Includes club mosses, horsetails and ferns • Tracheid: new cell type that specializes in water transport. -Hollow cells with thick walls that resist pressure. • Xylem: primary fluid transport • Phloem: transport nutrients and carbs

  9. Tracheophytes • Seedless vascular plants • Contain xylem & phloem (vascular tissue) • Xylem – carries water up from the roots • Phloem– transports products of photosynthesis

  10. Tracheophytes • Have roots, stems, and leaves with veins • Include club mosses, horsetails, and ferns. • Ferns have rhizomes & fronds with sori • Rhizomes – fern stems • Fronds – fern leaves • Sori – fern spores

  11. Spermatophytes • Seed Plants • Have adaptations that allow them to reproduce without water • Flowers or cones • Transfer of sperm by pollination • Protection of embryos in seeds • Two types: • Gymnosperms • Angiosperms

  12. Gymnosperms • Bear their seeds directly on the surface of cones • Means “naked seeds” • Include conifers, ginkgo, cycads, and gnetophytes

  13. Angiosperms • Flowering plants • Bear seeds within ovaries which surround and protect the seed. • Two types: • Monocot • Dicot

  14. Monocots • All monocots have the following characteristics: • Single cotyledon – seed leaf • Parallel veins • Flower petals in multiples of 3 • Vascular tissue scattered throughout the stem • Fibrous roots

  15. Dicots • All dicots have the following characteristics: • Double cotyledon seeds • Branched veins • Flower petals in multiples of 4 or 5 • Vascular tissue arranged in a ring • Taproot

  16. Angiosperm Life Spans • Annuals – complete life cycle in one growing season • Biennials – complete life cycle in two years • First year: grow roots, short stems and sometimes leaves • Second year: grow new stems, leaves, produce flowers and seeds • Perennials – live many years

  17. Plant Structure • Flower • Male reproductive structures - Stamen • Female reproductive structures - Carpal

  18. Root Function • Anchor plant to the ground • Absorb water and dissolved nutrients from the soil • Water – through root pressure • Nutrients – through active transport

  19. Types of Roots Fibrous: root formed in bundles where it is not possible to determine the primary root.Cauline: roots that shoot from the stem.Tubercular: root in the form of a tubercle.Taproot: root that grows vertically into the earth.

  20. Plant Growth • Most plants grow and produce new cells at the tips of their roots and stems for as long as they live. • Meristematic tissue – cluster of tissue responsible for continuing growth throughout the plant’s lifetime.

More Related