jab Nye miljate hai tab purane boj lagne lagte hai !
Answer:
water-vascular system
Explanation:
Echinoderms exhibit several unique features and the presence of a water vascular system is one of them. The water vascular system of these organisms consists of a network of fluid-filled canals and chambers. The marine water enters and exits the system through an opening. This system functions as a hydrostatic skeleton during locomotion.
Tube feet of these organisms are filled with fluid as water enters into them via the canals of the water vascular system lead to them. This inflates the tube feet and serve in locomotion. The water entering through the water vascular system also brings in dissolved oxygen and food particles into the body.
Here is a hint, mitosis is the division of cells.
I think the answer is conduction
i hope this helps
In chemical digestion<span>, large molecules like proteins and starches are broken into simpler units that can be readily absorbed. </span>Digestive system<span>. ... The mouth, stomach, small intestine, and other </span>digestive system organs work<span> together to make digesting food and absorbing nutrients efficient.</span>
