by: bronwen zac & holly

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By: Bronwen Zac & Holly

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Fungi. By: Bronwen Zac & Holly. Corporal Structure. Fungi contain cells that are eukaryotic, the cell wall is present which is composed of chitin; A polymer of nitrogen containing sugar. - PowerPoint PPT Presentation

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By: Bronwen Zac & Holly

Corporal Structure• Fungi contain cells that are eukaryotic, the cell wall

is present which is composed of chitin; A polymer of nitrogen containing sugar.

• Some fungi are symmetrical and others are not. Mushrooms have a radial symmetry and other fungi have a bilateral symmetry which creates two mirror images. Ex: yeast

Physiology

• Circulation

• Gas exchange

• Digestion

• Nervous system

Circulation

• Fungi do not have a heart, but do have a circulatory system which is made up of masses of connecting hyphae. Hyphae is a long, branching filamentous structure of a fungus. They are the main mode of vegetative growth, yeast are unicellular fungi that do not grow as hyphae.

Gas exchange

• They do both aerobic and anaerobic respiration, but do not contain a respiratory system.

• They do go through cellular respiration. It is the process of oxidizing food molecules, like glucose to carbon dioxyde and water.

EX= C6 H12 O6+6O2+6H2O12H2D+6CO2

Digestion

• They receive there energy by decomposing dead matter found in soil.

• To digest their food, it transforms complex organic substances into raw materials that other fungi/plants use for growth and development.

• They have complete extracellular digestion meaning that they live in their food and digest the food that surrounds their bodies.

• Fungi are important decomposers because their mycelia breaks down and absorbs nutrients from their organic substrate.

Nervous system

• Fungi do not have a nervous system, but to replace it they have an endocrine.

• Endocrine is the system that enables fungi to recognize and react to outside stimuli in the form of available food sources.

Life cycle

• Fungi reproduce sexually and asexually. • Sexually- always produce spores as reproductive cells.

Spores are usually dispersed by air currents. (they germinate)

• Asexually- They reproduce through fragmentation, by breaking apart portions of the mycelium.

• The mycelium is the vegetative part of fungus.

Taxonomy

• Classification of Fungi

Kingdom- Fungi

Phylum- mycota

Class- mycetes

Order- ales

Family- aceae

Genus- --------

Species- -------

• There are many different examples of fungi, it is any unicellular or multicellular organism:

1. Mushrooms 2. Yeast3. Moulds4. Morels5. Truffles6. Shelf fungi7. Chytrids8. Water moulds

Taxonomy

21 3

5

46

7 8

Principal Characteristics

• Most fungi are multi cellular • All fungi are heterotrophs, they obtain their food

through absorption.• Not produced by seeds• They reproduce sexually and asexually.• Most fungi are terrestrial.• Can live in aquatic/moist habitats.• They don’t photosynthesize.• Lichen are two organisms close together that help its

partner out. The non fungi organism gives energy from photosynthesis and it also provides it vitamines. In return the fungi protects the organism by shading it from the strong sunlight since it will dry out very quickly.

THE END