The green glands found in arthropods are concerned with:

Explanation

Option A is correct.The green glands found in arthropods are concerned with excretion. Green glands are paired excretory organs that are found in the head of crustaceans. They are responsible for filtering waste products from the blood and excreting them from the body. Green glands are also thought to play a role in osmoregulation, the process of maintaining a balance of water and salts in the body. The other options are not functions of the green glands:Respiration is the process of exchanging oxygen and carbon dioxide between the body and the environment. Arthropods respire through a variety of structures, including gills, tracheae, and book lungs. Digestion is the process of breaking down food into smaller molecules that can be absorbed by the body. Arthropods digest food in a variety of ways, including through their mouths, stomachs, and intestines.Circulation is the movement of blood throughout the body. Arthropods have an open circulatory system, in which the blood does not flow in closed vessels.