Question

Characteristic of rotifers is

• A. Small size
• B. Ring of cilia
• C. Multicellular nature
• D. All of the above

Answer 1

The correct option is D All of the above

• Rotifers are multicellular, microscopic and free-living microscopic or near-microscopic multicellular pseudocoelomate animals. Hence multicellular nature and small size
• .They belong to the phylum Rotifera
• They are characterized by having specialized organ systems and a complete digestive tract that includes both a mouth and anus. Since these characteristics are all uniquely animal characteristics, rotifers are recognized as animals or metazoans, even though they are microscopic.
  
• Rotifers are called wheel animalcules because their corona is composed of several ciliated tufts around the mouth i.e ring of cilia, that in motion resemble a wheel. Hence Characteristic of rotifers is small size, ring of cilia and multicellular nature.
• So, the correct answer is 'All the above'.