Question

What happens when:
(i) Planaria gets cut into two pieces?
(ii) A mature spirogyra filament attains considerable length?
(iii) On maturation sporangia burst?

Answer 1

a) It regenerates and forms two new planaria's.

b) In this case fragmentation takes place. As soon as spirogyra reaches it's maturity it's body breaks down into two or more pieces and these subsequently form a new organism.

c) On maturation sporangia brust then spore formation.