Question

select the one true statement.
the nucleus directs a plant cells activities by sending instructions to different parts of the cell.
in a plant cell, the mitochondria contain the master plan for cell activities and cell development.
chromosomes are outside the nucleus of a plant cell.

Explanation:

• The nucleus is the control center of the cell. It contains the genetic material (DNA) which has the instructions for the cell's activities. So, the statement "The nucleus directs a plant cell’s activities by sending instructions to different parts of the cell" is correct.
• Mitochondria are the power - houses of the cell. They produce ATP (energy) through cellular respiration. The nucleus (not mitochondria) contains the master plan (DNA) for cell activities and development. So, the statement "In a plant cell, the mitochondria contain the master plan for cell activities and cell development" is wrong.
• Chromosomes are made of DNA and proteins. In a plant cell (a eukaryotic cell), chromosomes are located inside the nucleus. So, the statement "Chromosomes are outside the nucleus of a plant cell" is wrong.

Answer:

The nucleus directs a plant cell’s activities by sending instructions to different parts of the cell.