The siphuncle of nautiloids is used for:
A) regulating respiration rate.
B) providing propulsion.
C) regulating water and gas content within the chambers.
D) capturing food.
E) reproduction

Question

Quizplus · Accepted Answer

The siphuncle of nautiloids is used to regulate the water and gas content within the chambers. By adjusting the amount of water and gas in each chamber, nautiloids can control their buoyancy and move up or down in the water column. This allows them to avoid predators, search for food, and conserve energy during periods of low food availability.

The Siphuncle of Nautiloids Is Used For