Which part of the plant

cell control the cell activities?

Answer: The answer would be nucleus.

Explanation: The nucleus is well known as the command center. It contains DNA and cell's genetic material.

The nucleus

Explanation:

It houses the genetic material [ DNA] of the cell.

The nucleus is called the "brain" of the cell because it holds the information needed to conduct most of the cell's functions. Other molecules make proteins from that information on a regular basis. If removed, cell dies.