Q1
What do bacteria help decompose?
AOrganic matter
BOnly rocks
COnly metal
DNothing
ICSEClass 9 (ICSE)BiologyCh 9 · Topic 2
Practice and Revision - Economic Importance of Bacteria and Fungi
Let us practise and revise what we learned about economic importance of bacteria and fungi. Bacteria and fungi, though often associated with
Core concept
Bacteria help decompose organic matter, recycle nutrients in ecosystems, and are used in producing foods like yogurt and cheese.
How it works
Certain bacteria fix nitrogen in soil, making it available for plants, significantly benefiting agriculture and soil fertility.
Why it matters
Fungi, like yeast, are used in baking bread and brewing beverages, while others, like Penicillium, are sources of important antibiotics.
Key detail
Understanding the economic importance of bacteria and fungi helps us appreciate their essential roles beyond just causing diseases.
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Quick notes
• Bacteria decompose organic matter.
• They recycle nutrients in ecosystems.
• Bacteria are used in yogurt and cheese production.
• Nitrogen-fixing bacteria benefit agriculture.
• Yeast (a fungus) is used in baking and brewing.
• Penicillium (a fungus) produces antibiotics.
• Bacteria and fungi have essential beneficial roles.
• These roles go beyond causing diseases.