The formation of a canal system in sponges is due to:
Correct answer: A. Folding of inner walls
- A. Folding of inner walls
- B. Gastrovascular system
- C. Reproduction
- D. Porous walls
Explanation
Canal system in sponges develops due to folding of body wall. Three types of canal systems in sponges are ascon type, sycon type and leucon type. Leucon type of canal system is most advanced and develops by folding of body wall. Ascon type of canal system is most primitive and shows minimal foldingSo, the correct answer is 'Folding of inner walls'
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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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