Animal Kingdom Question 1013
Question: In sponges, canal system develops due to
[CBSE PMT 1996]
Options:
A) Gastrovascular system
B) Folding of inner walls
C) Porous walls
D) Reproduction
Show Answer
Answer:
Correct Answer: B
Solution:
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 folding
So, the correct answer is ‘Folding of inner walls’
BETA
