fungi structure

body parts of fungi

The most important body parts of fungi include: 1. Cell wall: A layer around the cell membrane of fungi cells made largely of chitin and other polysaccharides. It is similar to that found in plant cells, though the plant cell wall contains the polysaccharide cellulose. 2. Hyphae: These are thread-like strands which interconnect and bunch up into a mycelium ( Figure 1.1). Ever see mold on a damp wall or on old bread? The things that you are seeing are really mycelia. The hyphae and mycelia help the fungi absorb nutrients from other organisms. Most of the mycelium is hidden from view deep within the fungal food source, such as rotting matter in the soil, leaf litter, rotting wood, or dead animals. Fungi produce enzymes to digest cellulose and various other materials found in rotting matter, helping with the decaying process. 3. Specialized structures for reproduction: One example is a fruiting body. Just like a fruit is involved in the reproduction of a fruiting plant, a fruiting body is involved in the reproduction of a fungus. A mushroom is a fruiting body, which is the part of the fungus that produces spores ( Figure 1.2). The spores are the basic reproductive units of fungi. The mycelium remains hidden until it develops one or more fruiting bodies. The fruiting bodies are usually produced at the surface of the food source, rather than hidden within it. This allows the reproductive spores to be easily shed and carried away by the wind, water, or animals. The fruiting bodies are usually the only indication that a fungus is present. Like icebergs, the fruiting bodies represent only a tiny fraction of the whole fungus, with most of the fungus hidden from view. Hyphae of a Penicillium mold. The little trees are specialized hyphae on which spores are produced. A mushroom is a fruiting body.

textbook_image

textbook_image

instructional diagrams

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questions

a mushroom has the reproductive parts of the fungus.

-->  a. true

b. false

a mushroom is a fruiting body.

-->  a. true

b. false

what part of the fungus absorbs nutrients from other organisms?

a) cell wall

-->  b) mycelia

c) fruiting body

d) none of the above

what part of the fungus is involved in reproduction?

a) hyphae

b) mycelia

c) cell wall

-->  d) fruiting body

how are reproductive spores often spread throughout an ecosystem?

a) in leaf litter

b) by dead animals

-->  c) by the wind

d) by a fruiting body

fungal food sources include

a) rotting matter in the soil.

b) rotting wood.

c) dead animals.

-->  d) all of the above

the fungal cell wall contains

a) cellulose.

b) glucose.

-->  c) chitin.

d) all of the above

diagram questions

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