SSC CGL 2024 PYQ — Question 34

The correct answer is option 4 i.e. Tissue-organ grade organisation - Euplectella.

Euplectella, commonly known as the glass sponge, belongs to the phylum Porifera and represents a cellular-grade organization, not tissue-organ grade. In cellular-grade organisms, cells function independently without forming true tissues or organs. In contrast, tissue-organ grade organization is seen in more complex organisms, such as certain mollusks and higher animals, where specialized tissues work together to form organs. Therefore, the classification of Euplectella under tissue-organ grade is inaccurate, as it lacks the complexity associated with that level of biological organization.