Diagram of Plant Cell illustrates that every plant cell is protected by a cell wall that helps in maintaining its shape. They are eukaryotic cells having a true nucleus and specialized structures termed organelles, both of which perform specific roles essential for the survival of the cell.
Diagram of plant cell class 9 depicts that they are generally larger and rectangular than animal cells. They are different from animal cells while having certain cell organelles in common. This is because they serve different purposes.
The diagram of plant cell with labels is given below:
Diagram of Plant Cell
What is a Plant Cell?
A Plant cell is a basic structural and fundamental unit of a plant. Plant cell is eukaryotic , just like animal cell, which means it has a membrane-bound true nucleus and organelles that perform specific functions. It prepares its own food through photosynthesis.
Structure of Plant Cell
The diagram of plant cell class 8 and 9 are beneficial for examinations. The structure of plant cell is an composed of the following parts:
Cell Wall
The outermost rigid layer of a plant cell. Animal cells lack this. The main role of a cell wall is to give the cell rigidity and support against mechanical stress , and also allow for the circulation of water and minerals into and out of the cell.
Cell Membrane or plasma membrane
Every cell has this semi-permeable membrane whether it be an animal or a plant cell. A cell membrane acts as a barrier between the external environment and the inside protoplasm of the cell. It permits for the entry and exit of certain substances through highly regulated channels.
Nucleus
In eukaryotic cells, the nucleus is a membrane-based vital organelle. The nuclear envelope surrounds the nucleus like a shell. The nucleus has two parts:
- Nucleolus: It helps in the synthesis of ribosomes and protein manufacturing structures.
- Nucleopore: The holes in the membrane of a nucleus are called the nucleopores and these allow proteins and nucleic acids to flow through.
Plastids
Algae and plant cells have double-membrane bound organelles called plastids. There are three types of Plastids--- Chloroplasts, Leucoplasts, and Chromoplasts. Chloroplasts are a type of plastids that are involved in photosynthesis. Chromoplasts store pigments such as carotenoids. The leucoplasts are present in non-photosynthetic tissues of plants and store proteins, starches and oils.
Central Vacuole
This is the largest organelle present in plant cells. It is bounded by a membrane known as Tonoplast. Vacoules performs roles like waste disposal, storage, and maintenance of turgor pressure of a cell.
Golgi Apparatus
They are majorly responsible for distributing synthesized macro-molecules to the various parts of the cell. It consists of a number of flattened, stacked pouches known as Cisternae.
Also Read: Golgi Apparatus -Diagram, Structure, and its Functions
Ribosomes
They are also known as the “Protein factories of the cell”. It is a macro-molecular machine that synthesizes biological proteins. They are flattened and spherical in shape and are comprised of two major components: the large and small ribosomal subunits.
Mitochondria
Mitochondria also known as the “powerhouse of the cell”. These are the double-membrane bound organelles that produce energy by breaking down sugar and carb molecules. They vary in shapes ranging from oval to tubular-shaped, double-membrane organelles.
Also Read: Why Mitochondria is known as Power House of the Cell?
Endoplasmic Reticulum
The portion of the ER that is attached to the ribosomes is known as the rough ER. They are primarily responsible for the synthesis of proteins within the cell. When compared to rough ER, the smooth ER appears smoother because it does not have ribosomes on its surface. They play a very crucial role in the synthesis of lipids, metabolism of carbohydrates, and detoxification of drugs.
Also Read: Endoplamic Reticulum
Conclusion on Diagram of Plant Cell
In conclusion, the diagram of Plant Cell depicts that it has a cell wall which provides structural support, a cell membrane which regulates the movement of substances and cytoplasm which harbours organelles such as the nucleus, chloroplasts, ribosomes etc.
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