![The canal system in sponges develops due to](https://www.gkseries.com/blog/wp-content/uploads/2022/01/The-canal-system-in-sponges-develops-due-to-1.png)
Q. The canal system in sponges develops due to
A. Porous walls
B. Gastrovascular system
C. Reproduction
D. Folding of inner walls
Answer: Folding of inner walls
A. Porous walls
B. Gastrovascular system
C. Reproduction
D. Folding of inner walls
Answer: Folding of inner walls
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