1 / 15

Kingdom Fungi

Kingdom Fungi. Characteristics of Fungi. Fungi are eukaryotic heterotrophs that have cell walls. Their cell walls contain chitin , a complex carbohydrate. Except for yeasts, all fungi are multicellular Fungi are made up of thin filaments called hyphae

kay
Download Presentation

Kingdom Fungi

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 Fungi

  2. Characteristics of Fungi • Fungi are eukaryoticheterotrophs that have cell walls. • Their cell walls contain chitin, a complex carbohydrate. • Except for yeasts, all fungi are multicellular • Fungi are made up of thin filaments called hyphae • Each hypha is only one cell thick.

  3. Characteristics of Fungi • The bodies of multicellular fungi are composed of many hyphae tangled together into a thick mass called a mycelium.

  4. How do Fungi get their food? • Saprobes – secrete enzymes into dead organic matter and then absorb the nutrients from the decomposition • Ex. Mushrooms/ bread mold • Parasites – secrete enzymes onto things that are alive and absorb nutrients from the host • Ex. Ringworm/ “Athlete’s Foot”

  5. How do Fungi Reproduce? • Most fungi reproduce both asexually and sexually. • Asexually by spore formation • Sexually by the fusion of primitive gametes

  6. Structure and Function of Bread Mold • Black bread mold, Rhizopus stolonifer, is a zygomycete. (Division Zygomycota) • Black bread mold has three types of hyphae: • Rhizoids are rootlike hyphae that penetrate the bread's surface. • Stolons are stemlike hyphae that run along the surface of the bread. • Sporangiophores are strands of hyphae that support the spore case

  7. Rhizopus

  8. Rhizopus Life Cycle of a Black Bread Mold FERTILIZATION MEIOSIS Sexual Reproduction Asexual Reproduction

  9. Rhizoids = root-like hyphae The zhizoids meet underground and mating occurs between hyphae of different molds (SEXUAL REPRODUCTION)

  10. Lifecycle of a Zygomycete Fungi – Asexual then Sexual

  11. Rhizopus

  12. Rhizopus

  13. Anatomy of Rhizopus • Rhizoids – primitive roots • Stolon – hyphae “runners” • Sporangiophore – support hyphae • Sporangium – spore case • Spores – reproductive cells (asexual) • + and – hyphae – function in conjugation • Zygote – results from +/- gamtes fusing • Zygospore – protective covering

  14. Rhizopus • Hyphae from different mating types fuse and produce gamete-forming structures called + or – gametes • They fuse to form a zygote, which becomes protected by a zygospore.

More Related