Question

multiple choice question the long projections shown here on sperm cells that enable cellular movement are called: microvilli cilia flagella

Explanation:

To solve this, we analyze each option:

• Microvilli are small, finger - like projections on cells (e.g., intestinal cells) for absorption, not for sperm movement.
• Cilia are short, hair - like structures (e.g., in respiratory tract) that move in coordinated waves, while sperm have a single long projection.
• Flagella are long, whip - like structures that enable cellular movement. Sperm cells have a single flagellum (the tail) that helps them swim. So the correct option is flagella.

Answer:

C. flagella