What is the function of the water vascular system in echinoderms?

Question

A. Excretion C. Feeding

B. Locomotion D. Protection

Answer 1

B. Locomotion


Water enters the ampullae (bulb-like structures) from the water vascular system and forces water into tube feet (at least in sea stars) and creates movement allowing for locomotion.

C is also partially correct as the tube feet assist in feeding.
It works the tube feet in securing food and such, aiding in feeding.

They have other systems for excretion and spines on the skin (and other mechanisms) for protection.

Answer 2

Water Vascular System Definition

Answer 3

The water vascular system is a hydraulic system used by echinoderms, such as sea stars and sea urchins, for locomotion, food and waste transportation, and respiration. (Solomon, 2002). The system is composed of canals connecting numerous tube feet. Echinoderms move by alternately contracting muscles that force water into the tube feet, causing them to extend and push against the ground, then relaxing to allow the feet to retract. (Solomon, 2002; Dale, 2000). Water enters the madreporite and flows through the stone canal and then enters the circular ring canal. Water then is separated into five radial canals that branch into double rows of bulblike structures called ampullae, which are on each side of the ambulacral ridge. The ampullae are connected to suckerlike podia, the entire structure is called a tube foot. Contraction of the ampullae causes the podia to stretch as water is brought into them. This whole process allows for movement, and is quite powerful but extremely slow (Gilbertson, 1999).

Answer 4

The echinoderms use hydrostatic presure to move , and open prey, the water vascular system is similar to a hydrolic system .
This explains the great strength found in asteria's as they attach each tiny sucker foot to a victim and pry open a clam. It uses less muscle effort with the water vascular system than it would with plain muscle power ...
plus it enables the echinoderms to work with ease a great depths under crushing presures because fluids do not compress the starfish or seacucumber keep there shape

Answer 5

Echinoderms possess a water vascular system, a network of fluid-filled canals that function in locomotion, feeding, and gas exchange. This system appears to be the reason why they have lost the gill slits found in other Deuterostomes. They also possess an open and reduced circulatory system, and have a complete digestive tube (tubular gut).

The water vascular system is a hydraulic system used by echinoderms, such as starfish and sea urchins, for locomotion, food and waste transportation, and respiration. (Solomon, 2002).

So, I suppose A, B, and C are correct.

Answer 6

the water vascular system is to help with the aid of movement. as we all know an echoniderms are star fish, they are deuterostoms meaning they are born butt first and then mouth, jsut like humans. and the water vascular has nothing to do with the anus or the mouth.

the answer is B.

Answer 7

excretion and feeding

Answer 8

B