Question

A student takes planaria in the lab and cuts it into three parts. What will likely happen? a) the cells around the cut start to divide to form a lost part
(b) the cells around the cut enlarge to take the shape of the lost part
(c) the cells around the cut start to divide to form a complete organism
d) the cells around the cut form a bud and grow into a new organism

Answer 1

>>>>>>>>Option B<<<<<<<<

The cell around the cut enlarge to take the shape of the lost part.

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Answer 2

When planaria are cut into three parts, the cells around the cut form a bud and grow into a new organism. (option : d)

• Planaria are Platyhelminthes or flatworms that show the process of regeneration.
• Any Planaria when cut from any plane of its body, the cut part can regenerate into a whole new organism.
• The cells around the cut form a dedifferentiated mass of cells that form the lost differentiated tissues.
• The mass of cells grown outward from the cut area is called blastema or the Regeneration bud.