Which of the following are found in sponges only?

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Which of the following are found in sponges only? Answer: Choanocytes

Choanocytes, also known as "collar cells," are specialized cells lining the internal canals of sponges and are responsible for creating water currents to filter food particles from the water flowing through the sponge.

Question context

This question is part of 🔬 General Science within the broader 🌐 Current Affairs & GK subject and appears in the SPSC – Sindh Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.