Download presentation
1
Fungi
2
Characteristics of Fungi
Eukaryotes Most are _____cellular Not closely related to other kingdoms of organisms Fungi were once placed in the _____ kingdom
3
Fungi are heterotrophs
Fungi are not green……why? Fungi do not have __________ and cannot capture energy from sunlight Instead, they get energy and organic molecules from their surroundings
4
Structure Fungi are made of cells in long, slender filaments; Hyphae
Each hypha is a long string of individual cells separated by walls called septa Septa have holes in them to let _________ and ________ travel between cells
5
Structure As they grow, hyphae branch and tangle to form a mass called a mycelium Not all fungi have hyphae or a mycelium; Yeasts Usually, the only part of the fungus you see are its _________________ structures!
6
Cell walls of fungi Made up of chitin
Same tough material is also found in exoskeletons of ___________ and arthropods
7
Fungi digest food outside their bodies
Some fungi attack living ______ and ________ Others attack dead organisms Hyphae break down organic matter and absorb nutrients
8
Reproduction Fungi reproduce by __________
Spores produce a new individual fungus Spores can be carried by ______ currents or by animals Moisture causes spores to rapidly grow into a hypha
9
How can fungi be beneficial to people?
P.O.D. 4/7/09 How can fungi be beneficial to people?
10
Fungi Lifecycle
11
Groups of Fungi Basidiomycetes Deuteromycetes Ascomycetes Zygomycetes
Spores produced on stalks that grow from a zygosporangium Spores produced in saclike reproductive structures Spores form at tips of clublike reproductive structures Unusual, rare, or not observed reproduction
12
Bread Molds Zygomycetes
Form reproductive structures called zygosporangia Spores can remain _________ for months Spread by wind/air currents
13
Sac Fungi - Ascomycetes
Yeasts, mildews, morels, truffles Spores form in _________ Without ascomycetes, no bread, pizza, rolls, moldy cheeses like Camembert and Roquefort
14
Club fungi - Basidiomycetes
Mushrooms, toadstools, puffballs Largest group of fungi Reproductive structures are _______ shaped
15
Fungi Imperfecti - Deuteromycetes
Common molds No known method of sexual reproduction Penicillium notatum Produces the antibiotic penicillin Deuteromycetes can cause skin diseases such as athlete’s foot
16
Fungi Plants Mycorrhizae
Symbiotic relationship between fungi and plants Fungi gives water and minerals Plant gives photosynthetically produced food
17
Fungi Algae Lichen Mutualistic relationship between fungi and algae or cyanobacteria Fungi absorbs water and minerals from environment Algae uses nutrients for photosynthesis and provides organic molecules
18
Lichens Can survive in very harsh conditions
Susceptible to air pollution Acts as an indicator for scientists to track air pollution
19
Humans Fungi Yeast – Saccharomyces cerevisiae
Penicillin – Penicillium notatum Cyclosporine – made by fungi, helps body accept organ transplants (50%90%) Yeasts are used for genetic engineering, may lead to new treatments for AIDS and cancer
20
Humans Fungi Fungi cause diseases in crops
Farmers lose billions of dollars per year from fungal crop diseases Histoplasma capsulatum – causes histoplasmosis, a serious and sometimes fatal disease in humans
Similar presentations
© 2024 SlidePlayer.com Inc.
All rights reserved.