Question

1. If you leave a piece of moist bread covered under a
small bell jar at a warm place, mould grows on it in
a few days. Answer the following with reference to
this observation :
(a) How did the mould get inside the bell- jar?
(b) What would happen if the bread was not
covered by the bell-jar?
(c) What would happen if moist bread was placed
in a refrigerator?
(d) What appears first on the bread-the mycelia
or the spores?
(e) How does bread mould obtain nourishment ?
What type of nourishment is it-epiphytic,
autotrophic, parasitic symbiotic, or saprophytic?​

Answer 1

Explanation:

1. If You Leave a Piece of Moist Bread Covered Under a Small Bell Jar at a Warm Place, Mould Grows on It in a Few Days. Concept: Harmful Role of Bacteria in Spoilage of Food, Disease in Plants and Animals, Bio-weapons, Denitrification.
2. Bread stales much more quickly in the refrigerator. ... during a bread's lifetime (which begins when a bread cools after being heated during baking), its starches (which were rearranged when baked) will regroup back to their original, crystallized state. Thus, your bread becomes hard, or stale.
3. 1. (a) Moulds are commonly present in air, water, etc. Hence, they were already present when moist bread was kept covered with the bell-jar. ... The warm and humid conditions inside the bell-jar promote rapid production of mould