Neco 2025 Biology Question 8

Practice essay / theory question 8 from the 2025 Neco Biology examination. This question covers coordination, endocrine_system .

Neco 2025 Biology Essay / Theory

Topics: coordination endocrine_system

Question 8 NECO • 2025 • BIOLOGY • essay

The diagram illustrates the major endocrine glands of the human body and the principal hormones they secrete. Using the diagram, answer the following questions.

Question Parts

( a )

Write the name of each gland corresponding to the numbers 1 to 6 shown in the diagram.

( b )

For each gland listed in part (a), state the principal hormone(s) it secretes and one major physiological effect of each hormone.

( c )

Explain the negative feedback mechanism that controls the production of thyroid hormones, referring explicitly to the hypothalamus‑pituitary‑thyroid axis shown in the diagram.

( d )

A patient reports chronic fatigue, weight gain, and intolerance to cold. Using the diagram and your knowledge of endocrine regulation, identify the gland most likely responsible for these symptoms and justify your choice with two supporting points.

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About This Question

This is Neco 2025 Biology Question 8. It is one of the essay questions from the 2025 Neco Biology examination.

The question covers coordination, endocrine_system .

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