Please do not put your backpacks, books, or clothes on the tables where the microscopes are. Thanks! If you need a map for Saturday’s field trip, please.

Slides:



Advertisements
Similar presentations
Cycadophyta, Ginkgophyta
Advertisements

Coniferophyta, Gnetophyta
Chapter 30 Plant Diversity II
Life on Earth Kingdom Plantae Part IV
Lab 7 – Bio 171 Plants 2 – Gymnosperms and Angiosperms.
The Plant Kingdom: Seed Plants
How does moss utilize water?
Introduction to Seed Plants: Gymnosperms. Outline Overview Phylum Pinophyta Phylum Ginkgophyta Phylum Cycadophyta Phylum Gnetophyta Human Relevance of.
The Plant Kingdom: Seed Plants
Seed Plants Angiosperms and Gymnosperms.
The Seed Plants: Gymnosperms
Continuing Trends in Plant Evolution Extreme reduction of water-dependent gametophyte Vascular tissue – improved more Even more efficient roots, stems,
Seed Plants. Evolution of the seed  Seeds represent an extreme form of heterospory  Seed – mature ovule with embryo –Megasporangium surrounded by.
Gymnosperm s Ch. 24 Notes. Seed Plants Reproduce by seeds Seeds develop from fertilized egg cell 2 Groups of Seed Plants: –Gymnosperms –Angiosperms.
The Evolution of Seed Plants
Lab Pine Lifecycle Lilly Lifecycle Dates for plant group origins: Mosses 475 Ferns 420 Gymnosperms 360 Angiosperms 160.
Plants II The Vascular Plants Hypericum sp. Photo by Alan Mulvey THE SEED PLANTS I Gymnosperms.
CHAPTER 30 PLANT DIVERSITY II: THE EVOLUTION OF SEED PLANTS Copyright © 2002 Pearson Education, Inc., publishing as Benjamin Cummings Section B2: Gymnosperms.
Conifers BIOL Seed Plants Vascular Tissue Produce seeds –Dispersal of offspring Produce pollen Sperm transfer without water.
Gymnosperms Spring Outline Review of land plant phylogeny Characters of seed plants Gymnosperm phylogeny & diversity –Gnetophytes –Cycads –Gingko.
Outline Overview Phylum Pinophyta Phylum Ginkgophyta Phylum Cycadophyta Phylum Gnetophyta Human Relevance of Gymnosperms  Conifers  Other Gymnosperms.
Gymnosperms.
Chapter 30 Notes Plant Diversity II: The Evolution of Seed plants.
Introduction to Seed Plants: Gymnosperms
Gymnosperms: Evolution of the Seed
Gymnosperms and Angiosperms. GymnospermsAngiosperms 1. Seeds 2. Leaves 3. Reproduction 4. Example 5. Quick Drawing 1. Seeds 2. Leaves 3. Reproduction.
Kingdom Plantae: Heterospory and Seed Plants
GYMNOSPERMS & THE LIFE CYCLE OF THE PINES Packet #72 Chapter #30 Friday, October 02,
Chapter 30 Notes Plant Diversity II: The Evolution of Seed plants.
Plantae Seed Plants.
CHAPTER 30 PLANT DIVERSITY II: THE EVOLUTION OF SEED PLANTS Seed.
P LANT D IVERSITY II Chapter 30. F ERTILIZATION OF S EED P LANTS V IA P OLLEN Microspore develop into pollen grains, the male gametophyte covered by sporopollenin.
Gymnosperms (naked seeds) Diverged 150 mya, when Earth became warmer and drier and the swamp forests declined. – no swimming for the sperm. Members.
Chapter 30 : Plant Diversity II: The Evolution of Seed Plants.
Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings PowerPoint ® Lecture Presentations for Biology Eighth Edition Neil Campbell.
Seed Plants & Gymnosperms
Chapter 30 – Plant Diversity II: Chapter 30 – Plant Diversity II: The Evolution of Seed Plants.
Chapter 8 Section 4 Gymnosperms.
Plant Diversity II Evolution by Seed Plants. cyanobacteria on land – 1.2 billion years ago 500 MYA – colonization by plants closest relatives of land.
Chapter 30: Plant Diversity II: The Evolution of Seed Plants.
Nonflowering Seed Plants
GYMNOSPERMS “Naked Seeds”.
Gymnosperms- Chapter 18. Naked versus Enclosed Seed Plants Gymnosperms –Gymno- gr. naked. –Sperma- gr. seed. Angiosperms –Angeion- gr. vessel. –Sperma-
 Think in terms of what we have seen so far in the evolution of land plants.  1. What has had to change in order to move away from water?  2. What do.
Designed by Pyeongsug Kim ©2008 SI Online Gymnosperms Practice Question Topic 17 Spring 2009 Dr. Hughey’s Bio 3 (Lab.)
Land Plants – The Gymnosperms
Gynosperms.
TUESDAY 1/26/16 Learning Goal: Describe the characteristics of gymnosperms. Warm up: The _______________ is the seed leaf that sometimes stores food. Homework:
SI Online Gymnosperms Practice Question Topic 17 Spring 2009
Introduction to Seed Plants: Gymnosperms. Outline Overview Phylum Pinophyta Phylum Ginkgophyta Phylum Cycadophyta Phylum Gnetophyta Human Relevance of.
Gymnosperms. Key Characteristics  Vascular, seed bearing plants that lack flowers  “gymno” = naked, “sperm” = seed  Most features based on reproduction.
Introduction to Seed Plants: Gymnosperms
Vascular Plants with Seeds
Plants Why the world is green.
Seed Plants Seed = embryo sporophyte, encased in and dispersed with gametophytic and maternal sporophytic tissues. Gymnosperms – seeds “naked” in cones.
Modified from Dr. Sue Hartley’s BTNY1203
Plantae Seed Plants.
Gymnosperms Spring 2011.
Faculty of Science, School of Sciences, Natabua Campus Lautoka
The Gymnosperms Sporophyte dominant
Evolution by Seed Plants
Topics Origin and adaptive superiority of vascular system,
Seed Plants Seed = embryo sporophyte, encased in and dispersed with gametophytic and maternal sporophytic tissues. Gymnosperms – seeds “naked” in cones.
UNDERSTANDING GYMNOSPERMS
Diversity of Seed Plants
Gymnosperms- Chapter 18.
Plantae Seed Plants.
Nonflowering Seed Plants
Kingdom Plantae: Heterospory and Seed Plants
Presentation transcript:

Please do not put your backpacks, books, or clothes on the tables where the microscopes are. Thanks! If you need a map for Saturday’s field trip, please pick one up from the front desk.

Gymnosperms (non-flowering seed plants) EKU BIO 131

Gymnosperms Phylum Ginkgophyta Ginkgo – the only species is Ginkgo biloba Phylum Cycadophyta the cycads Phylum Coniferophyta (or Pinophyta) the conifers Phylum Gnetophyta the gnetophytes

Ginkgo ovule and seed development

Ginkgophyta Leaves and seeds microsporangia on male tree ripe seeds cleaned seeds (sometimes called “Ginkgo nuts”) germinating seeds

Cycadophyta sporophytes Two explorers with the only wild specimen of Encephalartos woodii ever discovered. It was first discovered in the early 1700s.

Cycad cones seed cones pollen cones Encephalartos woodii

Cycad sporangia and coralloid roots note microsporangium, tapetum, microspores note integuments, megasporangium, Female gametophyte coralloid roots root with zone of symbiotic cyanobacteria

Coniferophyta Pollen cone buds of Japanese Black Pine (at about meiosis time) photo by Ross Clark pollen cone buds (the dark spots are the tips of the microsporophylls) buds containing needles

Pine pollen development be able to identify all structures Coniferophyta

Pine ovule development be able to identify all structures Coniferophyta

Gnetophyta: Gnetum notice stamens and ovules (plant is monoecious) seeds

Gnetophyta: Ephedra male female (Ephedra is dioecious.) seeds Ephedrine is potentially dangerous.

Gnetophyta: Welwitschia Welwitschia is definitely one of the world’s most unusual plants! Here is Welwitschia’s only habitat: the Namibian Desert, one of the driest deserts in the world. Welwitschia is one of The world’s rarest plants. Most of the following photos were taken by Terry Huff, an EKU graduate student. photo by Terry Huff

Gnetophyta: Welwitschia photo by Terry Huff Welwitschia has two leaves. They have basal meristems. The leaves eventually become separated into tattered segments. Welwitschia is dioecious. This is a female plant. Note the ovulate (seed) cones, and compare them with the pollen cones on the next slide. Here is a young plant. Young plants are extremely rare. Note the two leaves. photo by Terry Huff

Gnetophyta: Welwitschia photo by Terry Huff Here is a male plant. Note the smaller pollen cones. photo by Terry Huff

Gnetophyta: Welwitschia photo by Terry Huff Here are some female (seed) cones, together with the small bugs that live on Welwitschia and may help to pollinate it. photo by Terry Huff

Gnetophyta: Welwitschia photo by Terry Huff Here are some female cones, together with the small bugs that live on Welwitschia and may help to pollinate it. Here are some very young seed cones, at about pollination time. photo by Terry Huff

Gnetophyta: Welwitschia photo by Terry Huff Here is another nice photo of a plant loaded with seed cones. Very few of the seeds germinate, because of the extreme environmental conditions in the Namibian Desert. photo by Terry Huff

Why so many photos of Welwitschia ? -- because these photos by Terry Huff are some of the best photos ever taken of Welwitschia in its native habitat. They are better than any other photos you will find in any textbooks or on the web. Terry said he was told there were fewer than 20 Welwitschia plants remaining in their native habitat.