19.5 Diversity of Fungi

KEY CONCEPT Fungi are heterotrophs that absorb their food.

19.5 Diversity of Fungi

Fungi are adapted to absorb their food from the environment.

• Plants and fungi have different traits. – Fungal cell walls are made of chitin. – Plant cell walls are made of cellulose.– Plants have chlorophyll and photosynthesize.– Fungi absorb food through hyphae.

19.5 Diversity of Fungi

• Fungi are multicellular organisms, with the exception of yeasts.

– hyphae – mycellium – fruiting body

19.5 Diversity of Fungi

Fungi come in many shapes and sizes.

• Primitive fungi are aquatic and have flagellated spores.• Sac fungi form a reproductive sac, or ascus.

– Yeasts are single-celled sac fungi.– Morels and truffles are multicellular sac fungi.

19.5 Diversity of Fungi

• Bread molds are often found on spoiled food.

– form zygospores during reproduction – mycorrhizae belong to this group

19.5 Diversity of Fungi

• Club fungi have fruiting bodies which are club-shaped.

– reproductive structures called basidia – include mushrooms, puffballs, and shelf fungi

19.5 Diversity of Fungi

Fungi reproduce sexually and asexually.

• Most fungi reproduce both sexually and asexually. – Yeasts reproduce asexually through budding.– Yeasts form asci during sexual reproduction.

19.5 Diversity of Fungi

• Multicellular fungi have complex reproductive cycles.

– distinctive reproductive structures

19.5 Diversity of Fungi

– life cycles may include either sexual or asexual reproduction or both

• Multicellular fungi have complex reproductive cycles.

19.5 Diversity of Fungi

– life cycles may include either sexual or asexual reproduction or both

• Multicellular fungi have complex reproductive cycles.

19.5 Diversity of Fungi

• All fungi form spores and zygotes.