Question

Rajesh observed a patch of greenish black powdery mass on a stale piece of bread.​

Answer 1

Answer:

The patch is Fungus

Explanation:

It feeds on the bread if , bread is left in open

Answer 2

Rhizopus stolonifer is the  greenish black fungus found on the stale bread.

Explanation:

Rhizopus stolonifer is the greenish black fungus found on the stale bread.

• The greenish black powdery substance found on the stale bread is Rhizopus stolonifer. They usually appear as green and black patches on bread.
• Bread molds grow easily on stale bread it is a nutritious medium. They are rich in sugars, contain moisture and are a perfect breeding spot.
• Fungi are organisms which grow on rotting food materials or damp places, crevices of wood and feed on the organic matter and they reproduce by producing spores.
• There are several types of fungi which grow on bread. Some of the most common fungi on bread are Pencillium bread mold, Cladosporium bread mold, Aspergillus niger mold, etc.