Multiple choice

Which of the following words means 'organisms with holes'?

  1. Porifera

  2. Coelenterata

  3. Nematoda

  4. Arthropoda
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A Correct answer
Explanation

Porifera – (Pori - holes) - This group includes organisms with holes. These are non-motile animals attached to some solid support under water. There have holes or ‘pores’, all over the body. These lead to a canal system that helps in circulating water throughout the body to bring in food and is helpful in respiration and removal of waste material. 

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