These organs in spiders produce with In this kind of circulatory system blood is carried This organ is both and endocrine and exocrine gland This group includes platypus and spiny anteaters Solution Answer to Question NO. 5.6 Bile is a dark green to yellowish brown fluid, produced in the liver of most vertebrates by special cells called hepatocytes. It is temporarly stored in the gallbladder and aids the digestion of lipids in the small intestine..