Question

Based on the diagram answer the following, what is the function of these bodies?

• A. Secrete spongin skeletal fiber
• B. Helps in perennation and asexual reproduction
• C. Helps in transporting nutrition
• D. None of the above

Answer 1

The correct option is B

Helps in perennation and asexual reproduction

Gemmules in Porifera are formed by the mass of archaeocytes surrounded by thick chitinous inner layer and outer membrane. Amphidisc spicules are present between inner and outer membrane. Gemmules are formed to combat the unfavorable extremes of winters and summers. These structures germinate through micropyle upon water availability and develop into new sponges thereby serving in perennation and asexual reproduction. Thus, the correct answer is option B.