During rainy seasons,the ground becomes slippery due to dense growth of

In $Spirogyra$,during the germination of the zygospore,how many haploid nuclei take part in the formation of a new filament?

Sea weeds are an important source of

Alginic acid is obtained from

Algin is a phycocolloid,obtained from the cell wall of

Provide the answers for the following analogy-based questions:
$(i)$ Flagellated : Zoospore :: Non-flagellated : ........
$(ii)$ Volvox : Colonial :: Spirogyra : .....