Question

Sponges are more advanced than Protozoa, because

• A. They have gastric cavity.
• B. They show division of labour among the cells.
• C. They have locomotary organs.
• D. They show regeneration.

Answer 1

Answer: (B)

They show division of labour among the cells.

In sponges, the cells show the division of labour for the purpose of performing specialized functions, whereas Protozoa is unicellular and there is no division of labour here. The sponge can reproduce sexually by means of ova and sperm whereas Protista can not. Thus, the correct answer is option B.