Question

cranial nerves in cyclostomes are
a)4-6 pairs
b)6-8 pairs
c)8-10 pairs
d)10-12 pairs​

Answer 1

c)8-10 pairs

hope it helps you frnd...

Answer 2

Answer:

Explanation:

Cyclostomes have 8 - 10 pairs of cranial nerves and thus, the option c) is the right answer. The dorsal nerve cord of cyclostomes is modified into these 8 – 10 pairs of cranial nerves that lead to the brain.

The brain of cyclostomes is not much developed and much smaller in size. Though 8 pairs of cranial nerves are enclosed in the cranium; the 9th and 10th cranial nerves do not lie inside the cranium.