Plastids are organelles found in eukaryotic cells that are responsible for various metabolic activities. They are present in plants and algae and are not found in animals. Plastids are of different types and perform different functions, some of which are discussed below.

Types of Plastids

There are three main types of plastids:

1. Chloroplasts: These are the most well-known type of plastids and are responsible for photosynthesis. They contain pigments such as chlorophyll, which helps in the absorption of light energy.

2. Chromoplasts: These plastids are responsible for the synthesis and storage of pigments other than chlorophyll. They give color to fruits, flowers, and other plant parts.

3. Leucoplasts: These are colorless plastids that are responsible for the synthesis and storage of starch, oils, and proteins.

Functions of Plastids

Plastids perform a variety of functions in plant cells. Some of the important functions are:

1. Photosynthesis: Chloroplasts are responsible for photosynthesis, which is the process by which plants make their food.

2. Storage: Plastids store various compounds such as starch, oils, and pigments.

3. Synthesis of Lipids: Some plastids are involved in the synthesis of lipids, which are essential components of cell membranes.

4. Carbohydrate Metabolism: Plastids are involved in the synthesis and breakdown of carbohydrates.

5. Protein Synthesis: Leucoplasts are involved in the synthesis of proteins.

Conclusion

In conclusion, plastids are important organelles found in plant cells. They perform a variety of functions such as photosynthesis, storage, and synthesis of lipids and proteins. The different types of plastids have different structures and functions, and their presence in plant cells is essential for their survival and growth.

Plant cells have organelles called plastids present in the cytoplasm . They are of different colours and types . Green colour plastids are called chloroplasts .