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Botany Lab #12: Plant Specimens & Fungi Slides

Explore detailed slides of plant specimens including moss, ferns, horsetail, and fungi, highlighting their structures and reproductive processes. Learn about asexual spores, symbiotic relationships like lichen, and prepare for upcoming exams.

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Botany Lab #12: Plant Specimens & Fungi Slides

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  1. Here are some slides from Lab #12. • Many students were very much into detail on Thursday not and did not see one or two slides?? Maybe. Possible?? Or Maybe Not! Regardless, I am being very generous and providing you with this PowerPoint. • Do take advantage of these slides. Its your second chance to view the specimen. Did YOU MISS A SKETCH OR TWO??

  2. Some Plant Slides

  3. Moss History: MALE Gametophyte

  4. Female GametophyteMoss :Archegonium EGG

  5. Moss: Spore Capsule

  6. spores are purple stained • This is a cross-section of a strobolis ( spore containing cone-like structure) of the Horsetail plant. Horsetail(Equisetum) Strobolis

  7. Remember these? We turned the fern frond leaf over , scraped the brown power (sori) onto a slide. • Sori contained several sporangia (spore cases) which contain spores (diploid) which undergo meiosis to become haploid spores. Ferns : their Sporangia

  8. Some Fungi Slides

  9. Penicillin: Conidia • Conidia are asexual,non-motile spores of a fungus; they are also called mitospores due to the way they are generated through the cellular process of mitosis. They are haploid cells genetically identical to the haploid parent, can develop into a new organism if conditions are favorable, and serve in biological dispersal.

  10. Basocarp: Gill (Microscope Section) • The surface of the gill part seems to be rough, because there are a lot of spores attached to the surface. In some place, scattered spores are even visible on the top of the gill. The gill is long and thin and light purple in color. 

  11. Budding In Saccharomyces ( Baker’s Yeast) • This is one of the Ascomycotes or “Sac Fungi” • Budding is an asexual form of reproduction. There is an unequal division of cytoplasm distributed to the two daughter cells during mitotic cell division.

  12. Some Symbiotic Relationships

  13. LICHEN: THALLUS • The body of an individual lichen is called a THALLUS. • A thallus is composed of a mycobiant ( fungal organism..seen as a mycelium strands) and a algae ( seen as colorful cells within the myceliium) • This mutualistic relationship allows algae to grow in places where they would not normally grow i.e. cement. Lichen: Thallus

  14. When you return from Thanksgiving break we will have lab 13 which contains a considerable amount of information on animals. • Please review this write-up before coming to your scheduled lab. • Start studying for your lab final exam which will be given the day of the lab 14. • There will be a review sessions on Tuesdays 2:00-3:30 in IT 128 and office hours by appointment as usual. • If you are planning of presenting an extra-credit article, follow the instructions and email me your materials ( see hand-out). • Have a Safe and Happy Thanksgiving! Reminder……….

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