What are dictyosomes in Class 11 Biology?

Dictyosomes are the stacks of flattened membrane-bound sacs that make up the Golgi apparatus in plant cells. They are responsible for modifying, packaging, and transporting proteins and other cellular materials.

In plant cells, the Golgi apparatus is often present as several separate units called dictyosomes, whereas in animal cells it usually exists as a single complex structure. Dictyosomes receive substances from the endoplasmic reticulum, process them, and pack them into vesicles for transport to different parts of the cell or outside the cell.

Functions of dictyosomes:

• Modify proteins and lipids

• Package cellular products into vesicles

• Help in secretion of substances

• Participate in cell wall formation in plants

Example: In plant cells, dictyosomes help transport materials required for building the cell wall.

Important Exam Point: Dictyosomes are considered the functional units of the Golgi apparatus and are especially prominent in plant cells.

Quick Fact: The term "dictyosome" is mainly used for the Golgi stacks found in plant cells, while "Golgi apparatus" is the more general term used for both plant and animal cells.