Question

tissue formation is not seen in a) sponges b) anthozoans c) flat worm d) round worm​

Answer 1

a) sponges is the correct answer.

1. Sponges show cellular level of organization indicating that the cells are able to perform specialized functions.
2. Tissue level of organization is not seen in sponges which further indicate that specialized cells are not grouped together.
3. Sponges posses pores and canals that assist in passage of water through body providing them with required food.