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The organ which have dual origin from em...

The organ which have dual origin from embryonic layers :
(1) Hypophysis
(2) Adrenal gland
(3) Sense organs
(4) Pancreas

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The correct Answer is:
To determine which organ has a dual origin from embryonic layers, let's analyze each option provided: 1. **Hypophysis (Pituitary Gland)**: - The hypophysis is divided into the anterior pituitary and the posterior pituitary. - The posterior pituitary is derived from the ectoderm, while the anterior pituitary originates from the endoderm. - Therefore, the hypophysis has a dual origin. 2. **Adrenal Gland**: - The adrenal gland consists of two parts: the adrenal cortex and the adrenal medulla. - The adrenal medulla is formed from the ectoderm, and the adrenal cortex is derived from the mesoderm. - Thus, the adrenal gland also has a dual origin. 3. **Sense Organs**: - Sense organs, particularly the ear, have different parts originating from different embryonic layers. - The internal ear is derived from the ectoderm, while the middle ear develops from the endoderm. - Therefore, sense organs can also be considered to have a dual origin. 4. **Pancreas**: - The pancreas is primarily derived from the endoderm. - It does not have a dual origin, as it does not involve multiple embryonic layers. **Conclusion**: The organs that have dual origin from embryonic layers are the Hypophysis, Adrenal Gland, and Sense Organs. **Final Answer**: (1) Hypophysis, (2) Adrenal Gland, (3) Sense Organs. ---
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Assertion : Adrenal gland have dual origin. Reason : The aderenal cortex develops from endoderm while adrenal medulla develops from mesoderm.

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