Question

valves are present in veins.Reason

Answer 1

Answer:

no valves are not present in veins. valves ensures that blood do not flows backward and are present in heart not in arteries or in veins

Answer 2

Answer:Unlike arteries, veins contain valves that ensure blood flows in only one direction. (Arteries don't require valves because pressure from the heart is so strong that blood is only able to flow in one direction.)

Hope this helps :)