Question

The cell component visible only during cell division is

• A. mitochondria
• B. chloroplast
• C. chromosome
• D. chromatin

Answer 1

The correct option is C

chromosome

The correct option is C.

Explanation of the correct option:

Chromosome:

1. The cell component visible only during cell division is the chromosome.
2. The highly condensed and coiled chromatin fibers which appear during karyokinesis are called chromosomes.
3. In a non-dividing cell, the genetic material(DNA) is present as chromatin fibers. Chromosomes are visible only during certain stages of cellular division. They are formed by coiling and supercoiling chromatin fibers. During cellular division, chromosomes are highly condensed and visible as dark distinct bodies within the nuclei of cells. So that they are visible under a microscope.

Explanation of the incorrect options :

Option A :

Mitochondria :

1. It is a double membrane-bounded organelle present inside both the plant and animal cell that is responsible to generate energy in the form of ATP.
2. It is also known as the Powerhouse of the cell.

Option B :

Chloroplast :

1. It is a double membrane-bounded organelle present inside only the plant cell useful for the process of photosynthesis.
2. It contains a green-colored pigment called chlorophyll to trap the sunlight for photosynthesis.

Option D :

Chromatin :

1. It is a thread-like structure present in the resting state of the nucleus in the cell.
2. When the cell is not dividing, it is called chromatin or chromatin fiber.

Therefore, the correct answer is Chromosome.