1 / 9

Plant Classification & Reproduction

Plant Classification & Reproduction. Plants can be classified into 2 main groups:. Non-seed plants mosses = no vascular systems ferns = vascular systems but no seeds Seed plants Gymnosperms = complex vascular system + bare seed (cone)

damita
Télécharger la présentation

Plant Classification & Reproduction

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 & Reproduction

  2. Plants can be classified into 2 main groups: • Non-seed plants • mosses = no vascular systems • ferns = vascular systems but no seeds • Seed plants • Gymnosperms = complex vascular system + bare seed (cone) • Angiosperm = complex vascular system + enclosed seed within a flower

  3. Reproduction terminologyAlternation of GenerationAny life cycle that involves sexual and asexual reproduction The life cycle of all plants have 2 phases: • Asexual reproduction new plant produced from one parent plant only (genetically identical to parent) • Sporophyte  form of plant that reproduces asexually • Sexual reproduction  new plant produced by union of a male and female sex cell (NOT genetically identical) • Gametophyte form of plant that reproduces sexually (egg + sperm –--fertilization---- zygote  embryo  new sporophyte)

  4. Non-seed plant Fern have large leafy fronds, rhizomes (underground stems) and generally prefer warm moist climates. Needs water for reproduction. Life Cycle • Sporophyte – large and photosynthetic • Produces spores asexually • Gametophyte – separate small plant (1cm diameter) from the sporophyte • produces zygote sexually

  5. Seed plants Gymnosperms woody trees or shrubs (conifers) that produce seeds that are NOT in an enclosed structure. Wind needed for pollination. Life Cycle • Sporophyte = large trees that produce cones • Produces pollen and eggs • Gametophyte = microscopic plant found on specialized structure on the sporophyte • Produces seeds

  6. Angiosperms flowering plants. Can be pollinated by insects and wind. Life Cycle • Sporophyte = flowering plant • produces pollen and eggs • Gametophyte = pollen and egg found in the flowers • produces seeds

  7. … these are the parts of the flower Male reproductive part = stamen which are made up of… • filament - stalk • anther – produces pollen grains Female reproductive part = Pistil which is made up of… • style – stalk • stigma – sticky surface at tip of style • ovary – organ that contain the egg style

  8. Fern Vs. Angiosperm Comparison of their life Cycles page 279 figure 8 and page 283 figure 6

  9. Fern Angiosperm

More Related