Question:
Which one of the following is NOT endodermal in origin?
Which one of the following is NOT endodermal in origin?
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The pineal gland comes from the roof of the brain, which is neural ectoderm.
Updated On: Nov 12, 2026
- Thymus gland
- Thyroid gland
- Parathyroid gland
- Pineal gland
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Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept
Different endocrine glands develop from different embryonic layers.
Step 2: Endodermal glands
Thymus and parathyroids arise from the endodermal pharyngeal pouches. The thyroid buds from the endodermal lining of the pharynx floor.
Step 3: Odd one
The pineal gland grows from the roof of the diencephalon of the brain, so it is of ectodermal (neural) origin.
Final Answer:
The pineal gland is not endodermal in origin. \[ \boxed{\text{(D) }\text{Pineal gland}} \]
Different endocrine glands develop from different embryonic layers.
Step 2: Endodermal glands
Thymus and parathyroids arise from the endodermal pharyngeal pouches. The thyroid buds from the endodermal lining of the pharynx floor.
Step 3: Odd one
The pineal gland grows from the roof of the diencephalon of the brain, so it is of ectodermal (neural) origin.
Final Answer:
The pineal gland is not endodermal in origin. \[ \boxed{\text{(D) }\text{Pineal gland}} \]
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