Q. Which statement is correct for phylum Porifera?
A) They are dioecious with direct development
B) They are hermaphrodite and show indirect development with a larval stage
C) Digestion is extracellular
D) They are radially symmetrical and diploblastic with tissue-level organisation
Explanation
Sponges are mostly asymmetrical, cellular-level animals with intracellular digestion. Sexes are not separate, fertilisation is internal and development is indirect with a morphologically distinct larva.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.