What happens when the following situations are initiated:
$(a)$ $A$ $Planaria$ is cut into three different pieces.
$(b)$ $A$ leaf of the $Bryophyllum$ with notches falls on the soil.
$(c)$ Testosterone is released in the male reproductive system.

(N/A) $Planaria$ exhibits high regenerative capacity; therefore,each cut piece grows into a complete new organism.
$(b)$ The buds present in the notches of the $Bryophyllum$ leaf develop into new plantlets when they come in contact with moist soil.
$(c)$ The release of testosterone triggers the development of secondary sexual characteristics in boys during puberty,such as voice change,growth of facial hair,and increased muscle mass.