Which of the following is an artificial method of vegetative propagation?

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

Name the type of asexual reproduction in:
$(a)$ Planaria
$(b)$ Rhizopus
$(c)$ Spirogyra
$(d)$ Hydra

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

Would a Planaria cut vertically into two halves regenerate into two individuals? Complete Figure $D$ and $E$ by indicating the regenerated regions.

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