Multiple choice Which of the following is a correct statement about plastids? They are the fluid living content between the plasma membrane and the nucleus. They are found in plant cells only and have extra nuclear DNA. They are the protein synthesising site of the cell. They are the site for storing and transporting proteins across the cytoplasm. They are the storage units in cells. Reveal answer Fill a bubble to check yourself B Correct answer Explanation Plastids are found in plant cells only. They are double membrane bounded structures. They have extra nuclear DNA. Chromoplasts and leucoplasts are the two types of plastids.