Question

write the procedure you followed to observe rhizopus or bread mold in your school laboratory?

Answer 1

Answer:

material required-mould sample,plain glass slide,coverslip,water,disposable gloves

Answer 2

Rhizopus is saprophytic fungi growing on plants and animals which comes under the Division Mucoromycota. They produce zygospores during sexual reproduction.

They are commonly known as black bread mould , bread mould and pin mould.

Materials required:

• Slices of bread,  transparent bags, fruit juice of choice, gloves, labels, microscope and cotton swabs.

Procedure:

1. Take the cotton swabs and rub it in some dust, then transfer the dust from cotton swab over small pieces of bread.
2. Add some fruit juice to the bread pieces and place them in transparent bags and leave them for a few days.
3. Observe the pieces carefully at a fixed time each day under a microscope.
4. After certain time, we can notice coloured or colourless fibrous clustered structures having knobs.
5. Label the specimen as Rhizopus colony (normal conditions).

Observations:

After observing the bread slices under a microscope we can see thread-like structures, having circular heads. Thus, the specimen we observe is a Rhizopus colony characterised by its cottony appearance.