Animal Kingdom Question 1027
Question: Canal system in porifera is not concerned with
[AFMC 2005]
Options:
A) Respiration
B) Nutrition
C) Sexual reproduction
D) None of these
Show Answer
Answer:
Correct Answer: C
Solution:
. Sponges are holozoic organisms and do not have a digestive system. The food particles are directly ingested with the help of choanocytes present in the flagellated chambers of the canal system.
B. In sponges. sexual reproduction takes place through the participation of sperm and ovum. These sex cells are either formed from the archaeocytes or from the choanocytes present in the canal system.
C. Since there is a continuous flow of water because of the canal system, the gaseous exchange takes place between cells of sponges and the flowing water.
Hence, all the options are the functions of the canal system.
BETA
