Which of the following pairs is INCORRECT regarding the grade of organisation and its example?

Explanation

Euplectella is a glass sponge and does not possess tissue-organ grade organization. In traditional introductory classifications, Sycon illustrates cellular organization, Paramecium protoplasmic organization and jellyfish tissue-level organization. Glass sponges also have specialized syncytial tissues, so the explanation should not imply every sponge has identical cellular architecture.