Question

Why does bread mould grow profusely on a moist slice of bread rather than on a dry slice of bread?

Answer 1

Hint: Bread mould is a fungi . Fungi grow more profusely on moist surfaces than on dry surfaces.

Step by step answer:Bread Mould fungi is also known as Rhizopus Fungi.
When there is moisture or water the mould grows. Moisture is an important factor in the growth of mould. Another important factor for the growth of fungi is the temperature around 25 to 30 degrees Celsius. They are heterotrophic so they need some organic compound or sugar for their growth. They also need oxygen for optimum growth. Fungi also need humidity for proper growth.
Some additional information :
Bread mould fungi belong to Phycomycetes. Members of Phycomycetes are found in aquatic habitats and on decaying wood in moist or damp places or as obligate parasites on plants. The mycelium is septate and coenocytic.
Asexual reproduction takes place by zoospores which are motile or by aplanospores that are not motile.
These spores are endogenously produced in the sporangium.
Zygospores are formed by the fusion of two gametes; these gametes are similar in morphology and called isogamous or dissimilar in morphology so-called anisogamous or oogamous.
Isogametes mean two gametes which are similar. Anisogamate means two gametes are not similar. Oogametes mean one gamete mostly of females is bigger in size and the other is smaller.
Some common examples are Mucor, Rhizopus or the bread mould fungi, and Albugo the parasitic fungi on mustard.

Note: Phycomycetes are only fungi whose mycelium is septate and coenocytic and are found in aquatic habitats and on decaying wood in moist or damp places or as obligate parasites on plants.