yes it is a characteristic of porifers cox they don't have any pellicular structure for locomotion and have pores on their bodies as to take water and pump themselves forward
Echinoderms are invertebrates with an internal skeleton and a system of fluid-filled tubes called water vascular system.
The structure that allows water into and out of the water vascular system is called the madreporite.
The major difference between the vascular system of a human and a starfish is that humans have cardio vascular system and starfish have water vascular system.
The madreporite is the structure that is part of an echinoderm's water vascular system. It acts as a sievelike structure that allows water to enter the system and is connected to the internal canals of the water vascular system.
sea urchins are species which belongs to phylum echinordermata, class ecinoidia. Normally every echinodermates has water vascular system. And sea urchin, yes it is. It has water vascular system.
Echinodermates possess a water vascular system.
Porifera are sponges, they have no main organs or tissues. They are a loose aggregation of cells. To eat they pump water though their system and catch the particles in the water. A very basic cell structure.
Water vascular system
water vascular system
No
the water vascular system
The characteristic is that hey are non-vascular and so it has the characteristics of moss. That's the answer for it