Animal Kingdom Question 998
Question: Nerve cells do not occur in
[CPMT 1989]
Options:
A) Nematodes
B) Mosquitoes
C) Sponges
D) Coelenterates
Show Answer
Answer:
Correct Answer: C
Solution:
A. Nematodes (phylum Aschelminthes) have a nervous system with circumcentric rings and nerve cords.
B. Mosquitoes (phylum Arthropoda) have a well developed nervous system.
C. Sponges (phylum Porifera) are the only animals that do not have nerve cells.
D. Coelenterates (phylum Cnidaria) don’t have a nervous system but non polar neurons are irregularly scattered in the body So, the correct answer is ‘Sponges’
BETA
