1. Characteristics of Fungi
The Kingdom Fungi
Characteristics of Fungi

2. Fungal Characteristics
lack chlorophyll
can’t produce food
lack true tissues, made of masses of filaments
cell walls containing chitin, not cellulose

3. Fungal Nutrition heterotrophic
saprophytes – nourishment from dead organic material
parasites
dimorphism – the ability to change form

4. Fungal Nutrition
external digestion

5. Fungal Respiration Most fungi require oxygen for their metabolism.
All fungi require moisture for active growth.
can withstand dryness by forming spores

6. Colonial Structure composed of slender filaments called hyphae septate
cell walls dividing hyphae
nonseptate
mycelia (mycelium)
mass of intertwined hyphae

7. Types of Hyphae rhizoids (saprophytes) haustoria (parasites)
aerial hyphae
sporophores – produce spores
stolons – connect groups of hyphae together

8. host cells
haustoria

9. sporophores
stolon
rhizoids

10. Asexual Reproduction
occurs when environmental conditions are favorable
budding
fragmentation
most commonly by spores

11. Types of Sporophores sporangiophore conidiophore
spores are formed in an enclosure called a sporangium.
conidiophore
spores (conidia) are NOT formed within an enclosure.

12. Sexual Reproduction
occurs during times of unfavorable environmental conditions
no male or female, just + or -
spore production
hyphae from two different mycelia fuse.
a fruiting body forms and releases spores.
isogametes