What is the temporary projection of cytoplasm used by some protists for feeding or movement?

What is the temporary projection of cytoplasm used by some protists for feeding or movement?

• A. Pseudopod
• B. Cilia
• C. Flagella
• D. Trichocyst

Answer: (A)

Pseudopods are temporary extensions of cytoplasm that amoeboid protists use for both movement and feeding. The cell pushes out a portion of its cytoplasm to form a projection, which can attach to a surface and pull the cell forward as the rest of the cytoplasm streams into the front. For feeding, the pseudopod surrounds and engulfs prey in a process called phagocytosis, bringing it inside the cell. This kind of protrusion is different from cilia and flagella, which are stable appendages that propel the cell with coordinated beating or whiplike motion, and from trichocysts, which are defensive organelles.

Pseudopods are temporary extensions of cytoplasm that amoeboid protists use for both movement and feeding. The cell pushes out a portion of its cytoplasm to form a projection, which can attach to a surface and pull the cell forward as the rest of the cytoplasm streams into the front. For feeding, the pseudopod surrounds and engulfs prey in a process called phagocytosis, bringing it inside the cell. This kind of protrusion is different from cilia and flagella, which are stable appendages that propel the cell with coordinated beating or whiplike motion, and from trichocysts, which are defensive organelles.