In which method is a branch of the stem bent and buried in the soil to perform vegetative propagation?

In which plant does vegetative reproduction occur through the stem?

Give reasons as to why the following processes are different from each other:
$(a)$ Fission in $Amoeba$ and $Plasmodium$.
$(b)$ Binary fission and Fragmentation.

Factors responsible for the rapid spread of bread mould on slices of bread are:
$(i)$ Large number of spores
$(ii)$ Availability of moisture and nutrients in bread
$(iii)$ Presence of tubular branched hyphae
$(iv)$ Formation of round-shaped sporangia

How will an organism be benefited if it reproduces through spores?

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