Question

What does ‘primitive nucleus’ mean?
A) No membrane is surrounding the genetic material.
B) Double membrane is surrounding the genetic.
C) The nucleus is absent.
D) The nucleoplasm is absent.

Answer 1

Hint:Nucleus is a cell organelle which is enclosed in a nuclear membrane and contains a major portion of the cell’s genetic material. Primitive nucleus is a kind of nucleus which is found in prokaryotic cells.

Complete answer:
The primitive nucleus refers to the first formed nucleus that was not covered by any membrane. The primitive nucleus is the characteristic of prokaryotic cells. Prokaryotic cells are those that lack a distinct nucleus and other organelles due to the absence of internal membranes. Bacteria are said to be the best-known prokaryotic organisms. Prokaryotic cells are said to be primitive because they lack a membrane-bound nucleus and other membrane-bound cell organelles. The word prokaryotic means “primitive nucleus.”
The nucleus is a membrane-bound organelle that contains genetic material (DNA) of eukaryotic organisms. The nucleus contains genetic material. The function of the nucleus is to coordinate cell activities like protein synthesis and cell division.
Eukaryotic cells have a distinct nucleus. The nucleus of eukaryotic cells is composed primarily of protein and deoxyribonucleic acid, or DNA. The eukaryotic cells are found in animals, plants, and fungi.

Thus, the correct answer is option (C) The nucleus is absent.

Note:It is to be noted that the cell contains only one nucleus. However, under some conditions, the nucleus divides but the cytoplasm does not. Under such conditions, a multinucleated cell (syncytium) is produced. E.g., skeletal muscle fibres.