Question

which of the following is a true statement about cilia and flagella?
many animals have ciliated and flagellated cells.
bacteria can have flagella but not cilia.
most plants have ciliated and flagellated cells.
protists will only have flagellated cells.
i dont know yet

Explanation:

• Analyze each option:
• Option 1: Many animals have ciliated cells (e.g., in respiratory tract) but flagellated cells are rare in animals (sperm is flagellated but not all animals have many flagellated cells), so this is not accurate.
• Option 2: Bacteria can have flagella for movement, and bacteria do not have cilia (cilia are more complex structures found in eukaryotes), so this is true.
• Option 3: Most plants do not have ciliated or flagellated cells (some plant sperm may be flagellated in lower plants, but not most plants), so this is false.
• Option 4: Protists can have ciliated, flagellated, or amoeboid forms (e.g., Paramecium is ciliated, Euglena is flagellated), so "only flagellated" is false.

Answer:

B. Bacteria can have flagella but not cilia