Introduction: Parenchyma is a type of simple permanent tissue found in plants. It is also known as the packing tissue of plants. In this response, we will discuss why parenchyma is called the packing tissue of plants.

Functions of Parenchyma: Parenchyma has several functions in plants, including:

1. Storage: Parenchyma cells can store various substances such as starch, protein, and oils.

2. Photosynthesis: Some parenchyma cells have chloroplasts and can perform photosynthesis.

3. Gas exchange: Parenchyma cells can exchange gases such as oxygen and carbon dioxide.

4. Secretion: Some parenchyma cells can secrete substances such as resin and latex.

Packing Function: The packing function of parenchyma is related to its ability to store substances. The cells of parenchyma are loosely packed and have large intercellular spaces. This allows them to store a considerable amount of substances such as starch, protein, and oils. The loosely packed cells also provide mechanical support to the plant.

The loosely packed nature of parenchyma cells also allows for easy diffusion of gases and water. This is important for the exchange of gases during photosynthesis and respiration, as well as for the transport of water and nutrients throughout the plant.

Types of Parenchyma: There are three types of parenchyma:

1. Chlorenchyma: This type of parenchyma contains chloroplasts and is involved in photosynthesis.

2. Aerenchyma: This type of parenchyma has large intercellular spaces and is found in aquatic plants. It allows for the diffusion of gases such as oxygen and carbon dioxide.

3. Storage Parenchyma: This type of parenchyma is involved in the storage of substances such as starch, protein, and oils.

Conclusion: In conclusion, parenchyma is called the packing tissue of plants because of its ability to store substances and provide mechanical support to the plant. The loosely packed cells of parenchyma also allow for easy diffusion of gases and water, making it an important tissue for plant survival.

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