Question

When a moist slice of bread was kept aside for a few days then some organism grew on it to form a white cottony mass which later turned black. When this slice of bread was observed through a magnifying glass, then fine thread-like projections and thin stems having bulb-like structures at the top were seen.
(a) What is the common name and scientific name of the organism which grew on the moist slice of bread?
(b) How did this organism grow on the moist slice of bread automatically?
(c) What are the fine, thread-like projections on the surface of slice of bread known as?
(d) What name is given to the knob-like structures and what do they contain?
(e) What is the name of this method of reproduction?
(f) Name one unicellular organism which reproduces by this method.
(g) Name tow non-flowering plants which reproduce by this method.

Answer 1

Explanation:

Common name -Bread mould \ fungus

Scientific name _ Rhizopus fungus

b. spores of this fungus are present in air and under favourable condition reproduce asexually. to form mould.

c. fine thread like projections are Hyphae.

d. knob like structures are called sporangium they contain spores.

e. spore formation asexual reproduction.

f. Bacteria

g. ferns and mosses.

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