Do insects also have blood?

Do insects also have blood?

Blood flows from the heart and blood vessels to a person's blood circulation system.
But insect's circulatory system is different from that of humans. Insects contain only one major blood vessel, which extends from the top to the bottom of the body. This blood vessel is as big as heard in different places, which acts as a heart. Therefore, insects have more than one heart. However, insects do not have the same blood as humans. Insect blood is transparent or pale yellow or green.