Which of the following is/are ductless gland(s)?
Testes
Endocrine glands are ductless glands and release hormones directly into the blood. The hypothalamus, gonads, pituitary gland, thyroid, pineal body, parathyroid, thymus, adrenal glands, pancreas are examples of endocrine glands. The salivary glands in mammals are exocrine glands that produce saliva through a system of ducts.