Which of the following is a unique characteristic of sponges (Phylum Porifera)?
Show answer & explanation
Correct answer: A
Explanation
Correct Answer:
Water canal system and choanocytes
Explanation:
Sponges belong to Porifera, which are the simplest multicellular animals.
Their unique feature is a water canal system that helps in:
Water circulation
Food collection
Respiration and excretion
They have special cells called choanocytes (collar cells) that help in:
Creating water flow
Trapping food particles
Related Competitive Exam Questions:
Q1. Sponges belong to which phylum?
Answer: Porifera
Q2. The cells responsible for water circulation in sponges are:
Answer: Choanocytes