Question

what will happen if amoeba is REMOVES FROM THE LEAF

Answer 1

The main function of the nucleus is to direct cell activities, which it does by causing the production of specific enzymes to carry out chemical reactions.

By removing the nucleus, the "blueprints" of cell function are missing.

The cell will not die immediately is that there was still enough mRNA to allow production of the necessary enzymes. If a new nucleus can be reintroduced into the cell quickly enough, it can "take over" the job of instructing the cell how to make those enzymes again. If too much time goes by, the mRNA is all used up, no more enzymes are made, and the chemical reactions required for life stop.