Asked by Rosandra Dominique on Jul 06, 2024
Verified
Sea stars and sea urchins operate their tube feet by
A) a hydraulic system that regulates water pressure.
B) cilia transporting hemolymph from chamber to chamber.
C) sticky threads leading from the mouth.
D) actin and myosin fibers that slide and give muscle actions to the five arms or "rays."
E) an extensive net of nerve and muscle cells.
Hydraulic System
A technology in engineering that uses pressurized fluid to produce or transmit power.
Tube Feet
Small, flexible, hollow appendages used mostly for movement and feeding by echinoderms, such as sea stars and sea urchins.
Water Pressure
The force exerted by water on the surrounding environment, which increases with depth and is a critical factor in aquatic ecosystems and engineering.
- Explain the configuration and purpose of distinct tissues and systems in various animal categories.
Verified Answer
ZK
Zybrea KnightJul 08, 2024
Final Answer :
A
Explanation :
Sea stars and sea urchins operate their tube feet through a hydraulic system that regulates water pressure. The water vascular system allows them to control the movement of their tube feet by filling and releasing water from the feet's internal tubes.
Learning Objectives
- Explain the configuration and purpose of distinct tissues and systems in various animal categories.