The canal system in sponges develops due to which of the following?
Correct answer: D. Folding of inner walls
- A. Porous walls
- B. Gastrovascular system
- C. Reproduction
- D. Folding of inner walls
Explanation
Option A: As explained above this option is incorrect.Option B: As explained above this option is incorrect.Option C: As explained above this option is incorrect. Option D: The canal system in sponges develops due to the folding of the body wall. The three types of canal systems in sponges are ascon type, sycon type, and leucon type.
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About Kingdom Animalia
Animals are multicellular, heterotrophic eukaryotes whose cells lack cell walls and chloroplasts, with specialised tissues in most groups. Coverage includes body symmetry, tissue layers, coelom, segmentation and levels of organisation, plus major phyla such as Porifera, Cnidaria, Platyhelminthes, Annelida, Arthropoda, Mollusca and Chordata.
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