Question

Q. 15 Which of the following is not a function of canal system in sponges?
1)Respiration
2)Excretion
3)
Nutrition
4)Protection​

Answer 1

4) Protection...

hope it helps....

Answer 2

Solution:

Protection is not the function of the canal system in sponges.

Explanation:

• The canal system is found in organisms of the phylum Porifera such as sponges.
• These canals are lined with choanocytes that are collared flagellated cells.
• It helps in circulating water through the body to bring food and oxygen, and also to remove waste.
• that help in food acquisition, exchange of respiratory gas, and also in excretion.
• hence, option 4 is correct as protection is not the function of the canal system in sponges.