Apoptosis Is Greek for "Dropping Off" and Refers to the Programmed

Multiple Choice

Apoptosis is Greek for "dropping off" and refers to the programmed cell death of cells that attach the leaf to a stem.If you cut a branch in the summer,the leaves will not fall off in the autumn.What can you conclude from this observation?

A) The sap from the leaf can no longer move down the xylem to the trunk of the tree.
B) Once cut, the branch no longer can sense what season it is in.
C) The leaves are normally killed by substances that come from the trunk of the tree.
D) The leaves must be alive to go through apoptosis.
E) The branch does not need to get rid of leaves if it is cut off.