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Lab 12 Cycadophyta, Ginkgophyta. Seed plants General features of the vascular plants Common name: Seed plants Synonyms: Spermatophyta Sporophyte growth.

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Presentation on theme: "Lab 12 Cycadophyta, Ginkgophyta. Seed plants General features of the vascular plants Common name: Seed plants Synonyms: Spermatophyta Sporophyte growth."— Presentation transcript:

1 Lab 12 Cycadophyta, Ginkgophyta

2 Seed plants General features of the vascular plants Common name: Seed plants Synonyms: Spermatophyta Sporophyte growth habit: Stems, leaves, roots Gametophyte growth habit: Endosporic thalli

3 Seed plants Stele: Eustele Undulipodia (“flagella”): Whiplash (100 to 1000+) or none Sexual reproduction: Heterosporous Included Phyla: Cycadophyta, Ginkgophyta, Coniferophyta, Gnetophyta, Anthophyta Recognized by: Seeds, wood, eustele

4 Cycadophyta General features of the seed plants Common name: Cycads Synonyms: None Sporophytes: Dioecious; trees, shrubs with compound leaves and often only a single trunk. Strobili: Simple pollen cone; simple seed cone

5 Cycadophyta Undulipodia (“flagella”): Whiplash, more than 100 Representative genera: Cycas, Zamia Recognized by: Thick compound leaves, cones

6  Various cycads Cycadophyta

7  Microsporangiate strobili Cycadophyta

8  Megasporangiate strobili Cycadophyta

9  Cycad seeds Cycadophyta

10  Zamia ovule Cycadophyta

11  Cycas microsporophyll Cycadophyta

12  Cycas microsporophyll Cycadophyta

13 Ginkgophyta General features of the seed plants Common name: Ginkgo, Maidenhair tree Synonyms: None Sporophytes: Dioecious; tree Strobili: Simple pollen cone; no seed cone (ovules paired on the end of a slender branch)

14 Ginkgophyta Undulipodia (“flagella”): Whiplash, more than 1000 Representative genera: The single species Ginkgo biloba Recognized by: Fan-shaped leaves, seeds not in cones, smelly sarcotesta

15  Ginkgo Ginkgophyta

16  Ginkgo stem Ginkgophyta

17  Ginkgo pollen cone Ginkgophyta

18  Ginkgo “male” (pollen) strobilus Ginkgophyta

19  Ginkgo seeds Ginkgophyta

20  Ginkgo seeds Ginkgophyta

21  Ginkgo seeds Ginkgophyta

22  Ginkgo seeds Ginkgophyta

23  Ginkgo seeds Ginkgophyta

24  Ginkgo seeds Ginkgophyta


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