Question

Digestion in Leucosolenia and other sponges is

• A. Only extracellular
• B. Only intracellular
• C. First extracellular, then intracellular
• D. First intracellular, then extracellular

Answer 1

The correct option is B Only intracellular

Leucosolenia is a group of calcareous sponges. Sponges have a cellular level of organisation and thus, do not possess any organ system. Due to the absence of an organ, the digestion is intracellular. They use choanocytes to trap food and digestion take place in the food vacuole. Thus, the correct answer is option B.