Class NEET 2026 ALL Q #2065
KNOWLEDGE BASED
APPLY
4 Marks 2026 NTA-RE-NEET-2026 MCQ SINGLE
Which of the following hormone is not secreted by human placenta?
(A) LH
(B) hCG
(C) Estrogen
(D) Progesterone
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Correct Answer: A

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Detailed Solution

Step 1: Identify the role of the Placenta

The human placenta acts as an endocrine tissue during pregnancy. It produces several hormones essential for the maintenance of pregnancy and fetal development.

Step 2: Analyze the hormones secreted by the Placenta

The placenta secretes hormones such as Human Chorionic Gonadotropin (hCG), Human Placental Lactogen (hPL), Estrogens, and Progesterone. These are vital for supporting the uterine lining and fetal growth.

Step 3: Evaluate the options

Option (B) hCG, (C) Estrogen, and (D) Progesterone are all known to be secreted by the placenta. However, Luteinizing Hormone (LH) is secreted by the anterior pituitary gland, not the placenta.

Final Answer: A

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Pedagogical Audit
Bloom's Analysis: This is an APPLY question because the student must apply their knowledge of endocrine physiology to distinguish between pituitary and placental hormone sources.
Knowledge Dimension: FACTUAL
Justification: The question tests the recall of specific biological facts regarding the endocrine function of the placenta as outlined in the NCERT Biology curriculum.
Syllabus Audit: In the context of NEET, this is classified as KNOWLEDGE. This question directly assesses the student's grasp of the 'Human Reproduction' unit, which is a high-yield topic in the NEET syllabus.

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