Question

write some ways in which fungi are harmful to us. For Class 7​

Answer 1

Answer:

they can damage owr body cells.

Answer 2

Destruction of timber, Food spoilage and Plant diseases are some the causes in which fungi are harmful to us.

Explanation:

1. Plant diseases:

• Disease causing fungi are found in class Phycomycetes, Ascomycetes, Basidiomycetes and Fungi Imperfecti.

Examples:

• Wilt of cotton is caused by Fusarium vasinfectum
• Downy mildew of jowar is caused by Sclerospora sorghii

2. Destruction of timber

• Several fungi like Penicilium divaricatum, Fusarium negundi, Lentinus lepidens are responsible for decay of standing trees, sap stains and decay of wood.

3. Food spoilage

• Dairy products are spoiled by Aspergillus repens, Mucor, Penicillium, Cladosporium, Oiduni lactis, etc.
• Fruits and fruit preparations are spoiled by Penicillium digitatum, Debr, Zygosacchwomyces etc.
• Vegetables are spoiled by Rhizopus nigricans and Rhizopus tritici