In this Grade 7 Life Science lesson from Chapter 10, students learn how fungi obtain energy as decomposers by absorbing nutrients through threadlike structures called hyphae, and how the mycelium breaks down complex carbon compounds from dead organisms. Students also explore fungal reproduction through spores and examine different types of fungi, including multicellular species and single-celled yeasts. The lesson introduces key vocabulary — hyphae, spore, and lichen — and includes a hands-on mushroom investigation to observe spore-producing structures firsthand.
Section 1
Fungi Absorb Nutrients from Decomposing Matter
Fungi break down dead plants and animals, digesting their complex carbon compounds. As decomposers, they release chemicals that help recycle nutrients back into the environment for plants to use again.
Section 2
Mushrooms, Molds, and Yeasts Form Three Fungal Groups
Fungi come in three main forms. Mushrooms are reproductive bodies of larger underground networks, molds grow fuzzy spore-producing structures, and yeasts are single-celled organisms used in food production.
Section 3
Fungal Hyphae Create Weblike Networks
Most multicellular fungi develop thread-like structures called hyphae that form a mycelium network. This organization differs from plants and animals as fungi lack specialized tissues, helping them absorb nutrients efficiently.
Section 4
Spores Travel Through Air to Reproduce Fungi
Fungi reproduce using tiny spores that can survive harsh conditions. Wind can carry these lightweight reproductive cells vast distances, allowing fungi to spread and grow in new locations when conditions become favorable.
Section 5
Lichens Partner Fungi with Algae for Survival
In lichens, fungi form a mutually beneficial relationship with algae. The fungus provides protection and minerals while algae produce food through photosynthesis, allowing the combined organism to survive in harsh environments.
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Section 1
Fungi Absorb Nutrients from Decomposing Matter
Fungi break down dead plants and animals, digesting their complex carbon compounds. As decomposers, they release chemicals that help recycle nutrients back into the environment for plants to use again.
Section 2
Mushrooms, Molds, and Yeasts Form Three Fungal Groups
Fungi come in three main forms. Mushrooms are reproductive bodies of larger underground networks, molds grow fuzzy spore-producing structures, and yeasts are single-celled organisms used in food production.
Section 3
Fungal Hyphae Create Weblike Networks
Most multicellular fungi develop thread-like structures called hyphae that form a mycelium network. This organization differs from plants and animals as fungi lack specialized tissues, helping them absorb nutrients efficiently.
Section 4
Spores Travel Through Air to Reproduce Fungi
Fungi reproduce using tiny spores that can survive harsh conditions. Wind can carry these lightweight reproductive cells vast distances, allowing fungi to spread and grow in new locations when conditions become favorable.
Section 5
Lichens Partner Fungi with Algae for Survival
In lichens, fungi form a mutually beneficial relationship with algae. The fungus provides protection and minerals while algae produce food through photosynthesis, allowing the combined organism to survive in harsh environments.
Book overview
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Continue this chapter