Animal Kingdom Ques 148

148. The simplest type of canal system in Porifera is

(a) ascon type

(b) leucon type

(c) sycon type

(d) radial type

Show Answer

Answer : a

Hints & Solutions

(a) Presence of canal system - a network of channels for water transport - is an important feature in sponges. Ascon type of canal is simplest in Porifera which brings in food, oxygen and carries away $CO_2$ and nitrogenous waste.



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