In the following simplified diagram of a plant cell, five parts/organelles are marked from 1 to 5 :
[Image of a plant cell diagram with labels 1-5]
Which one of the following correctly represents the above parts/organelles ?
1 – cell membrane; 2 – cell wall; 3 – vacuole; 4 – endoplasmic reticulum; 5 – nucleus
1 – cell wall; 2 – cell membrane; 3 – endoplasmic reticulum; 4 – nucleus; 5 – vacuole
1 – cell wall; 2 – cell membrane; 3 – endoplasmic reticulum; 4 – vacuole; 5 – nucleus
1 – cell wall; 2 – cell membrane; 3 – vacuole; 4 – endoplasmic reticulum; 5 – nucleus
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UPSC CDS-2 – 2023
The diagram shows a typical plant cell. The outermost layer (1) of a plant cell is the rigid cell wall. Just inside the cell wall is the cell membrane (2). Plant cells usually have a large central vacuole (3) that occupies a significant portion of the cell volume, pushing the cytoplasm and other organelles towards the periphery. Within the cytoplasm is a network of membranes known as the endoplasmic reticulum (4). The nucleus (5) is a prominent, usually somewhat spherical, organelle containing the genetic material, often located near the periphery due to the large central vacuole.
Identifying key features of plant cells, such as the presence of a cell wall outside the cell membrane and a large central vacuole, is crucial for interpreting such diagrams. The relative position and appearance of organelles like the nucleus and endoplasmic reticulum within the cytoplasm should also be considered.