Primary Organelle in Amoeba responsible for regulating its movement and maintaining its shape
Amoeba is a single-celled organism that belongs to the group of protozoa. It moves and changes its shape primarily through the use of pseudopodia, which are temporary projections of its cytoplasm. The primary organelle responsible for regulating its movement and maintaining its shape in Amoeba is the pseudopodia.

Pseudopodia
Pseudopodia are temporary extensions of the cell membrane that allow Amoeba to move, capture food, and engulf prey. The term "pseudopodia" means "false feet," which accurately describes these structures as they are not permanent appendages but rather dynamic extensions that can be formed and retracted as needed by the cell.

Regulating Movement
Pseudopodia play a crucial role in the locomotion of Amoeba. By extending these projections in the direction of movement, the cell can propel itself forward. The cytoplasm flows into the pseudopodia, pushing the cell membrane outward and causing the organism to move in the desired direction. The constant formation and retraction of pseudopodia allow Amoeba to navigate its environment efficiently.

Maintaining Shape
In addition to facilitating movement, pseudopodia also help maintain the shape of Amoeba. By controlling the extension and retraction of these projections, the cell can adjust its size and shape as needed. This flexibility is essential for functions such as feeding, reproduction, and responding to changes in the environment.
In conclusion, pseudopodia are the primary organelles in Amoeba responsible for regulating its movement and maintaining its shape. These dynamic structures enable the cell to exhibit remarkable flexibility and adaptability, allowing it to survive and thrive in diverse habitats.