endocrine gland is also called is ductless gland answer is thyroid gland

Ductless Glands

Ductless glands, also known as endocrine glands, are glands that secrete hormones directly into the bloodstream, rather than through ducts. These hormones travel to target organs and tissues throughout the body to regulate various functions.

Identifying the Non-Ductless Gland

Out of the options given, the non-ductless gland is the salivary gland. Salivary glands are exocrine glands, which means they secrete substances through a duct onto an epithelial surface, rather than directly into the bloodstream.

Adrenal Gland
The adrenal gland is a ductless gland located above the kidneys. It produces hormones such as adrenaline, cortisol, and aldosterone, which help regulate the body's response to stress, blood pressure, and electrolyte balance.

Pituitary Gland
The pituitary gland is a small gland located at the base of the brain. It produces and secretes hormones that control various bodily functions, including growth and development, reproduction, and metabolism.

Thyroid Gland
The thyroid gland is a ductless gland located in the neck. It produces hormones such as thyroxine and triiodothyronine, which are involved in regulating metabolism and growth.

Conclusion
In summary, while all of the options given are glands in the body, the salivary gland is the only one that is not a ductless gland.