Question

Which among the following is incorrect about tissue level of organization?

(a) Cells performing same functions group together to form a tissue

(b) Organs are absent

(c) Planaria exhibits this level of organization

(d) Cells are specialized with division of labour

I had been asked this question during an interview.

This is a very interesting question from Basis of Classification in Animals topic in chapter Animal Kingdom of Biology – Class 11

Answer 1

The correct option is (c) Planaria exhibits this level of organization

To elaborate: Cells performing same functions group together to form a tissue. Organs are absent in this level of organization. Cells are specialized with division of labour. Example for this level of organization is Hydra. Planaria exhibits organ level of organization.