A worm X found in freshwater and slow-moving streams has been accidentally cut into three pieces. It was observed that in due course of time, each cut piece of the worm develops to become a complete worm by growing all the missing parts. (a) Name the worm X which can exhibit this phenomenon of making a complete worm from its cut body parts. (b) Name another organism Y that possesses the same characteristic of growing fully from its cut body parts. (c) What is the name of this process in which a complete organism is formed from its cut body part? (d) State whether X and Y are unicellular and/or multicellular organisms. (e) Can a dog be produced completely from its cut body part (say, a cut tail) just like organisms X and Y? Why?

A worm X found in freshwater and slow-moving streams has been accident

1.	A worm X found in freshwater and slow-moving streams has been accidentally cut into three pieces. It was observed that in due course of time, each cut piece of the worm develops to become a complete worm by growing all the missing parts. (a) Name the worm X which can exhibit this phenomenon of making a complete worm from its cut body parts. (b) Name another organism Y that possesses the same characteristic of growing fully from its cut body parts. (c) What is the name of this process in which a complete organism is formed from its cut body part? (d) State whether X and Y are unicellular and/or multicellular organisms. (e) Can a dog be produced completely from its cut body part (say, a cut tail) just like organisms X and Y? Why?
Answer» A worm X found in freshwater and slow-moving streams has been accidentally cut into three pieces. It was observed that in due course of time, each cut piece of the worm develops to become a complete worm by growing all the missing parts. (a) Name the worm X which can exhibit this phenomenon of making a complete worm from its cut body parts. (b) Name another organism Y that possesses the same characteristic of growing fully from its cut body parts. (c) What is the name of this process in which a complete organism is formed from its cut body part? (d) State whether X and Y are unicellular and/or multicellular organisms. (e) Can a dog be produced completely from its cut body part (say, a cut tail) just like organisms X and Y? Why?