Question

The largest cell organelle in the plant cell are
A. Plastids
B. Golgi bodies
C. Mitochondria
D. Chromosomes

Answer 1

Cells are the smallest and functional unit of any living organism. It is covered by a cell membrane and it consists of cell organelles.

Complete Answer:
Let us analyse the options to find the correct answer.

Option A: The largest cell organelles in a plant cell is the plastid and due to its large size it is easily observable under microscope. It has a thickness of 2 to 4 micrometers and 4 to 6 micrometers in length. Therefore, this is the correct option.
The word plastid was given by Ernst Haeckel in 1865. They are found in all plant cells and euglenoides and are required in the formation and storage of soluble and insoluble carbohydrates. They possess some specific pigments that are responsible for imparting specific colours to the plants.

Option B: Golgi bodies are 2 to 5 micrometers in length, therefore, this is the incorrect option. It also consists of 6 to 20 double membranes stacked one above the other.

Option C: The size of mitochondria in a plant cell is around 0.5 to 1 micrometers, therefore, this is the incorrect option. It consists of an inner and outer membrane which is separated by an intermembrane space.

Option D: Chromosomes are not cell organelles, instead they carry genetic information. Therefore, this is the incorrect option.

Thus, the correct option is A) Plastid.

Note: The plastid can be divided into three different types based on the presence or absence of different pigments:
1. Chloroplasts - They are green coloured due to presence of chlorophyll and aid in photosynthesis.
2. Leucoplast - They are colourless plastids and are found in the storage organs.
3. Chromoplasts - They are non photosynthetic plastids and are variously coloured such as orange, brown but except green.