Question

question ① correctly match the term and definition: cilia. answer small, barrel - shaped structures oriented at right angles to each other; form the bases of flagella tiny fingerlike projections of the plasma membrane; increase surface area for absorption motile cellular extensions found in large numbers in some epithelial cells long, cellular projections that are tail - like and aid in propulsion i dont know yet

Explanation:

• Analyze each option:
• First option: Describes centrioles (bases of flagella, barrel - shaped at right angles), not cilia.
• Second option: Describes microvilli (finger - like projections for absorption), not cilia.
• Third option: Cilia are motile cellular extensions, often present in large numbers on epithelial cells (e.g., in the respiratory tract to move mucus).
• Fourth option: Describes flagella (long, tail - like for propulsion), not cilia.

Answer:

The correct option is the third one: Motile cellular extensions found in large numbers in some epithelial cells